Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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After
Before
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Before
AfterWindows & Doors in Walnut, CA
Window installation in Walnut most often means replacing the original single-pane aluminum frames that were standard in the city’s 1970s and 1980s stucco tract homes. Those units are now 40 to 50 years old, and they fail just as California’s Title 24 Climate Zone 10 energy codes require dual-pane, low-SHGC glass on replacement work. The result is a job that combines aging-infrastructure repair with mandatory code compliance, and it takes a crew that knows how to flash a new rough opening into painted-over stucco. Call (509) 265-6387 for a written price on your Walnut project.
Why Walnut Homes Are Different
Most Walnut housing stock is single-family ranch and two-story tract construction from the 1970s and 1980s, framed in wood and wrapped in stucco. The original windows were single-pane aluminum sliders and wide picture windows, and the patio doors were aluminum sliders with roller carriages that have since corroded or sheared. The stucco surrounds create a specific complication: weep screeds at the base of the wall are often painted over or damaged, so when a window or door comes out, the flashing detail has to be rebuilt correctly or water finds its way into the rough opening.
Walnut sits in the Pomona Valley corridor at roughly 800 feet of elevation. Santa Ana wind events channel through this stretch harder than they do in lower San Gabriel Valley cities, with gusts sometimes exceeding 60 mph. Those winds stress window seals, blow out worn door weatherstripping, and drive air infiltration through deteriorated aluminum frames. Summer highs regularly land in the 95 to 105 degree range, which makes solar heat gain through unshaded west- and south-facing glass a significant cooling cost. Low-SHGC glazing is not a luxury specification here; it is the difference between an air conditioner that cycles and one that runs constantly.
The sliding patio doors on Walnut tract homes deserve special attention. By the time a homeowner calls about a sticky slider, the roller carriage is usually shot, but the bigger problem is often hidden: the stucco sill pan underneath was never properly waterproofed when the house was built. Rotted rough sills are common, and any new door unit has to wait until that framing is repaired.
Our Main Walnut Services
Walnut homeowners call us most often about two jobs: full door replacement and full window replacement. Each has its own dedicated Walnut page with local pricing, sub-job detail, and permit notes.
Door Installation in Walnut
Door work in Walnut usually involves pulling out a corroded aluminum slider or a warped entry door and setting a new unit into a stucco opening that was never flashed properly to begin with. We cut back the stucco, inspect the rough sill for rot, rebuild the waterproofing plane, and set the new door plumb. The written quote covers the framing repair because the measured survey catches it before work starts. See the full scope on our Door Installation in Walnut page.
Window Replacement in Walnut
Window replacement here means swapping 1970s and 1980s single-pane aluminum for dual-pane units that meet current Title 24 low-SHGC requirements. West- and south-facing bedrooms in Walnut take the worst of the afternoon heat, and those are the rooms where the old frames are most likely to have failed seals and fogged glass. We measure every opening, write the price, and document the install with photos. Get the full breakdown on our Window Replacement in Walnut page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
BeforeAfterWindow Installation in Walnut
Window installation in Walnut is a replacement market, not a new-construction market. The original single-pane aluminum windows in the city’s 1970s and 1980s tract homes are now 40 to 50 years old, and most have lost their thermal seals, bent their frames, or both. Santa Ana winds push through the Pomona Valley harder than homeowners expect, and old aluminum frames leak air badly under that pressure. Our Window Installation process starts with a measured survey you keep, so the written price is the same document as the final scope.
Single & Double Hung Windows
Signs you need it
Sashes that stick, drop when released, or rattle under Santa Ana wind are the most common calls we get from Walnut homeowners.
What it costs in Walnut
Single hung units run $350 to $800 per window installed in Walnut, while double hung units typically land between $450 and $1,100 installed.
How we do it
We measure the opening, order the unit with low-SHGC dual-pane glass, cut back the stucco as needed, set the new frame plumb, flash it, and re-seal the exterior.
Horizontal Roller Windows
Signs you need it
If the window takes two hands to slide and the track is visibly worn or the aluminum frame has started to bow, the original roller window is past its useful life.
What it costs in Walnut
Horizontal roller replacements in Walnut generally cost $300 to $700 per window installed, depending on opening width and frame condition.
How we do it
We remove the old aluminum frame, check the rough opening for rot at the sill, install the new roller unit, and rebuild the exterior waterproofing before sealing.
Casement Windows
Signs you need it
Crank mechanisms that slip or grind, plus visible daylight at the weatherstripping, mean the operator gear and the seal have both failed.
What it costs in Walnut
Casement windows in Walnut run $500 to $1,200 per unit installed, with pricing driven by opening size and whether the existing stucco surround needs repair.
How we do it
We remove the old casement, inspect the rough opening at the sill and jambs, set the new unit with fresh flashing, and adjust the hardware so the sash closes against the seal evenly.
Awning & Hopper Windows
Signs you need it
Bathrooms and utility rooms in Walnut tract homes often still have the original awning or hopper units, and the giveaway is fogged glass plus rusted hardware.
What it costs in Walnut
Awning and hopper window replacement in Walnut is usually $400 to $900 per unit installed, with small openings on the lower end.
How we do it
We measure the rough opening, order the correct venting orientation, remove the old unit, set the new one, and flash the stucco perimeter to keep water out of the wall.
What Window Installation Costs in Walnut
| Item | Typical range in Walnut |
|---|---|
| Single hung window | $350 - $800 installed |
| Double hung window | $450 - $1,100 installed |
| Casement window | $500 - $1,200 installed |
How long does window installation take in Walnut?
Most single-unit replacements finish in one day. A full house of windows in Walnut usually runs three to five working days, with added time if stucco repairs or rough-sill work is required. Call (509) 265-6387 for a written schedule.
Does Walnut require permits for window replacement?
Yes, replacement windows in Walnut typically require a permit, and the work must meet Title 24 energy standards for Climate Zone 10. We pull permits and pass inspections as part of the written scope. Call (509) 265-6387 and we will confirm your project’s permit path.
Impact Windows & Doors in Walnut
Impact windows and doors in Walnut are chosen for two reasons: Santa Ana wind gusts that can exceed 60 mph in the Pomona Valley corridor, and the security benefit of laminated glass in a city of single-story ranches with large rear glass. The 1970s and 1980s aluminum frames that dominate Walnut housing were never designed for either concern. Our Impact Windows & Doors work starts with a measured survey, and the written price includes the full installation, not just the unit cost.
Impact-Resistant Windows
Signs you need it
Windows that flex visibly during wind events or sit in unshaded south- and west-facing walls are the strongest candidates for upgrading in Walnut.
What it costs in Walnut
Impact-resistant windows in Walnut run $1,200 to $3,500 per unit installed, with size and frame type as the main variables.
How we do it
We measure the opening, specify the right impact-rated laminated glass unit, remove the old frame, set the new one into a properly flashed rough opening, and test the seal.
Hurricane Impact Windows
Signs you need it
Homes at the higher elevations of Walnut catch stronger wind than the valley floor, and windows with visible frame distortion after a Santa Ana event need assessment.
What it costs in Walnut
Hurricane impact windows in Walnut typically cost $1,500 to $3,800 per unit installed, depending on the opening size and the manufacturer specified.
How we do it
We specify a hurricane-rated unit from manufacturers like CGI or CWS, then install it with full perimeter flashing and a documented post-install photo record.
Single Hung Impact Windows
Signs you need it
Bedrooms and front-facing rooms with single-pane aluminum sliders that rattle during Santa Ana winds are the standard Walnut upgrade case.
What it costs in Walnut
Single hung impact windows in Walnut run $1,200 to $2,800 per unit installed.
How we do it
We replace the old hung window with an impact-rated single hung unit, flashing the stucco surround and verifying the frame is anchored to the rough opening per code.
Horizontal Roller & Sliding Impact Windows
Signs you need it
Wide living-room openings with original aluminum rollers that bind or jump track are the clearest sign a Walnut home needs an impact-rated slider.
What it costs in Walnut
Impact-rated horizontal roller and sliding windows in Walnut generally cost $1,500 to $3,500 per unit installed.
How we do it
We remove the old aluminum slider, repair any rough-sill damage, set the new impact-rated unit, and rebuild the exterior waterproofing before sealing.
What Impact Windows & Doors Costs in Walnut
| Item | Typical range in Walnut |
|---|---|
| Impact-resistant window | $1,200 - $3,500 installed |
| Hurricane impact window | $1,500 - $3,800 installed |
| Single hung impact window | $1,200 - $2,800 installed |
Are impact windows worth it in Walnut if I am not near the coast?
Yes. Walnut’s Santa Ana exposure and summer heat make impact-rated laminated glass a practical upgrade for wind resistance, security, and lower solar heat gain. Call (509) 265-6387 for a written price on your openings.
Will my HOA in Walnut allow impact windows?
Most Walnut HOAs permit impact windows if the replacement matches the original sightline and frame color. We can supply the spec sheet your architectural committee needs. Call (509) 265-6387 to start the review.
Energy-Efficient Windows in Walnut
Energy-efficient windows in Walnut are a Title 24 compliance item, not a preference. The city falls in Climate Zone 10, which requires dual-pane, low-SHGC glass on replacement windows, and the 95 to 105 degree summer days make unshaded west- and south-facing glass a real cooling-cost problem. The original single-pane aluminum frames in Walnut’s tract homes leak air and conduct heat straight through the metal. Our Energy-Efficient Windows process specifies glass by U-factor and SHGC, not by what happens to be in stock.
Low-E & Argon Gas Glass
Signs you need it
Rooms that never cool down, glass that radiates heat from three feet away, and utility bills that spike every summer are the standard Walnut signals.
What it costs in Walnut
Low-E dual-pane windows with argon gas in Walnut run $1,200 to $3,000 per unit installed, depending on size and manufacturer.
How we do it
We spec the correct low-E coating and argon fill for the window’s orientation, then install the unit with a sealed frame and full perimeter flashing.
ENERGY STAR Replacement Windows
Signs you need it
Condensation between panes, frames that feel hot to the touch in summer, and drafts at the sill plate are the three most common calls from Walnut.
What it costs in Walnut
ENERGY STAR replacement windows in Walnut typically cost $1,000 to $2,500 per unit installed, varying with the manufacturer line and window type.
How we do it
We measure each opening, specify an ENERGY STAR unit that meets Title 24 for Climate Zone 10, then install and document the work with photos.
Insulated Laminated Glass
Signs you need it
Noise from the 57 or 60 freeway corridors reaching bedrooms, plus visible single-pane glass in a 1970s or 1980s frame, points to this upgrade.
What it costs in Walnut
Insulated laminated glass units in Walnut land between $1,500 and $4,000 per window installed, with size as the main cost driver.
How we do it
We combine a laminated outer lite for sound reduction with an insulated airspace, then set the unit into a properly flashed and sealed rough opening.
UV-Blocking & Fade Protection
Signs you need it
Fading on hardwood floors, furniture, and upholstery in rooms with unshaded south or west glass is the Walnut-specific warning sign.
What it costs in Walnut
UV-blocking glass packages in Walnut add roughly $300 to $800 per window to the base replacement cost, depending on the coating specified.
How we do it
We select a low-E coating with high UV rejection, specify it on the glass package, and install the unit with the same flashing and sealing standard as every Sightline job.
What Energy-Efficient Windows Costs in Walnut
| Item | Typical range in Walnut |
|---|---|
| Low-E + argon gas window | $1,200 - $3,000 installed |
| ENERGY STAR replacement | $1,000 - $2,500 installed |
| Insulated laminated glass | $1,500 - $4,000 installed |
Will energy-efficient windows qualify for a rebate in Walnut?
Rebate programs change, but the Title 24 requirement is fixed: Walnut is in Climate Zone 10, and replacement windows must be dual-pane with low-SHGC glass. We can review current program options. Call (509) 265-6387.
Do energy-efficient windows reduce outside noise in Walnut?
Yes. Insulated laminated glass cuts both heat transfer and freeway noise, and many Walnut homeowners choose it for bedrooms facing the 57 or 60 corridors. Call (509) 265-6387 for a written price.
Sliding & Patio Doors in Walnut
Sliding and patio doors in Walnut are the single most common failure point in the city’s 1970s and 1980s tract homes. The original aluminum sliders have corroded tracks and sheared roller carriages, but the hidden issue is worse: the stucco sill pan beneath many of these doors was never properly waterproofed at construction, and by the time the door sticks, the rough sill underneath is often rotted. Our Sliding & Patio Doors work begins with a measured survey that catches sill damage before the written price is set.
Patio Doors
Signs you need it
A door that drags, lifts off its track, or lets daylight through the weatherstripping is telling you the rollers and the seal have both failed.
What it costs in Walnut
Patio door replacement in Walnut runs $1,500 to $3,500 installed, with the condition of the rough sill as the main variable.
How we do it
We remove the old door, inspect and repair the rough sill if needed, set the new unit plumb, flash the stucco perimeter, and install new weatherstripping.
Impact Sliding Glass Doors
Signs you need it
Large rear sliders that face the Santa Ana wind path or sit in unshaded west-facing walls are the strongest candidates for impact-rated glass in Walnut.
What it costs in Walnut
Impact sliding glass doors in Walnut typically cost $2,500 to $5,500 per unit installed, depending on panel count and manufacturer.
How we do it
We specify an impact-rated sliding unit from a manufacturer like ES Windows or CGI, then set and flash it with the same waterproofing standard as every job.
Sliding Glass Door Replacement
Signs you need it
Water staining at the interior base of the door, rollers that no longer move, or visible frame separation at the corners all mean replacement is overdue.
What it costs in Walnut
Sliding glass door replacement in Walnut generally lands between $1,500 and $3,500 installed, before any rough-sill repair is factored in.
How we do it
We pull the old slider, cut back the stucco as needed, rebuild the sill waterproofing, set the new unit, and seal the exterior to drain properly.
Screen Door Installation
Signs you need it
Torn mesh, bent frames, or screens that no longer slide easily are common on Walnut homes with original 1980s screen assemblies.
What it costs in Walnut
Screen door installation in Walnut runs $150 to $400 per door installed, with standard sliding screen doors on the lower end.
How we do it
We measure the existing opening, order the correct screen door for the track profile, install it, and test the glide before we leave.
What Sliding & Patio Doors Costs in Walnut
| Item | Typical range in Walnut |
|---|---|
| Patio door replacement | $1,500 - $3,500 installed |
| Impact sliding glass door | $2,500 - $5,500 installed |
| Screen door | $150 - $400 installed |
Why do Walnut sliding doors rot at the sill?
The original stucco sill pans on many 1970s and 1980s Walnut tract homes were never properly waterproofed, so water sat against the rough sill for decades before the door failed. Call (509) 265-6387 for an inspection and written estimate.
Can you replace just the rollers on my Walnut patio door?
Sometimes, but not often on the original aluminum sliders. By the time the roller carriage shears, the track is usually worn through and the sill below is suspect. Call (509) 265-6387 for an honest assessment.
Impact Garage Doors in Walnut
Impact garage doors in Walnut address two local realities: Santa Ana wind gusts that exceed 60 mph in the Pomona Valley corridor, and the wide single- and double-bay garages that are standard on the city’s 1970s and 1980s tract homes. Those original steel doors flex badly under wind load, and the tracks were never braced for lateral pressure. Our Impact Garage Doors work starts with a measured survey, and the written price includes wind-load bracing and track reinforcement, not just the door panel.
Hurricane-Rated Garage Doors
Signs you need it
A garage door that visibly flexes inward during a Santa Ana event or has popped panels from prior wind exposure is a Walnut home that needs rating.
What it costs in Walnut
Hurricane-rated garage doors in Walnut run $2,800 to $6,000 installed, with double-bay doors on the higher end.
How we do it
We measure the opening, specify a wind-rated door and reinforced track, remove the old assembly, install the new one, and torque every fastener to the manufacturer spec.
Energy-Efficient Garage Doors
Signs you need it
A garage that stays hot into the evening or an attached bedroom above the garage that never cools down points to an uninsulated door in Walnut.
What it costs in Walnut
Insulated energy-efficient garage doors in Walnut typically cost $1,800 to $4,000 installed, varying by size and R-value.
How we do it
We replace the old door with an insulated unit, add perimeter weatherstripping, and balance the springs so the door operates without stress on the opener.
Garage Door Replacement
Signs you need it
Dented panels, a door that binds on the track, or a spring that has already snapped are the reasons most Walnut homeowners call for full replacement.
What it costs in Walnut
Garage door replacement in Walnut runs $1,500 to $3,500 installed, depending on door size, material, and whether the track needs replacement.
How we do it
We remove the old door and track, inspect the header and jambs, install the new door with new track, and set the spring tension correctly before testing the full cycle.
Wind-Load Code Compliance
Signs you need it
If your Walnut home has an original 1970s or 1980s garage door and the track is not braced to the wall at every point, it likely does not meet current wind-load standards.
What it costs in Walnut
Wind-load bracing and compliance work in Walnut adds $500 to $1,500 to a door replacement, depending on the existing track condition and opening width.
How we do it
We install braced track, heavy-duty hinges, and larger jamb brackets, then verify the assembly against the wind-load requirements for the Pomona Valley corridor.
What Impact Garage Doors Costs in Walnut
| Item | Typical range in Walnut |
|---|---|
| Hurricane-rated garage door | $2,800 - $6,000 installed |
| Energy-efficient garage door | $1,800 - $4,000 installed |
| Garage door replacement | $1,500 - $3,500 installed |
Are impact garage doors required by code in Walnut?
Walnut does not mandate impact-rated garage doors, but wind-load bracing standards apply, and a rated door is the most direct way to meet them on a wide opening. Call (509) 265-6387 to confirm your door’s requirements.
Can I keep my existing garage door opener with a new impact door?
Usually yes, provided the opener has enough lift capacity for the heavier door. We check the opener’s rating during the survey and write the answer into the estimate. Call (509) 265-6387.
Custom & Geometric Windows in Walnut
Custom and geometric windows in Walnut are less common than replacement rectangles, but the city’s 1980s two-story tract homes do feature eyebrow arches, octagonal accent windows, and wide picture windows that standard stock units cannot fill. When those original units fail, the opening has to be rebuilt to a custom shape or reframed to a standard size, and the stucco surround makes that work precision-dependent. Our Custom & Geometric Windows process templates every opening before a price is written.
Custom Impact Windows
Signs you need it
A non-standard window that has fogged, cracked, or lost its seal in a Walnut home needs a custom solution, not a stock replacement.
What it costs in Walnut
Custom impact windows in Walnut run $2,000 to $5,000 per unit installed, driven by shape complexity and the manufacturer specified.
How we do it
We template the exact opening shape, order the unit to spec from a manufacturer like ES Windows or ECO Window Systems, and install it with full flashing.
Geometric & Shaped Windows
Signs you need it
Octagonal, trapezoidal, or angled windows with failed seals or cracked glass are the standard Walnut custom-shape replacement calls.
What it costs in Walnut
Geometric and shaped windows in Walnut generally cost $1,800 to $4,500 per unit installed, depending on the number of sides and frame type.
How we do it
We measure every side of the opening, specify the shape in CAD, order the unit, and set it into a properly flashed and sealed rough opening.
Arched & Curved Windows
Signs you need it
Eyebrow arches and half-round windows with broken seals or failed frames are common on Walnut’s 1980s two-story builds and cannot be replaced from stock.
What it costs in Walnut
Arched and curved windows in Walnut run $2,000 to $5,000 per unit installed, with the radius and frame condition as the main cost drivers.
How we do it
We template the arch, order a curved or segmented unit from a custom manufacturer, and install it with the same waterproofing standard as every Sightline job.
Oversized Openings
Signs you need it
A wide picture window or a floor-to-ceiling fixed pane that has cracked, fogged, or failed at the frame is an oversized opening job in Walnut.
What it costs in Walnut
Oversized window replacements in Walnut run $2,500 to $6,000 per unit installed, depending on glass area and whether the opening needs reframing.
How we do it
We measure the full opening, check the header and sill structure, order the unit to spec, and install it with the glazing and flashing the opening requires.
What Custom & Geometric Windows Costs in Walnut
| Item | Typical range in Walnut |
|---|---|
| Custom impact window | $2,000 - $5,000 installed |
| Geometric or shaped window | $1,800 - $4,500 installed |
| Arched or curved window | $2,000 - $5,000 installed |
Can you match the shape of my existing arched window in Walnut?
Yes. We template the opening precisely, order the matching shape from a custom line like ES Windows, and install it so the sightline matches the original. Call (509) 265-6387 to start.
How long does a custom window take to order in Walnut?
Custom shapes run four to eight weeks from template to delivery, depending on the manufacturer and glass package. We write the lead time into every estimate. Call (509) 265-6387 for a schedule.
Brands We Service in Walnut
We install and service windows and doors from eight manufacturer lines, including CGI, ES Windows, and ECO Window Systems, specified by the performance the opening needs. Common replacement parts are stocked locally, and standard units from these lines arrive in Walnut within one to three weeks. Learn more on our brands page.
Pricing for Windows & Doors in Walnut, CA
| Service | Typical range in Walnut |
|---|---|
| Single hung window | $350 - $800 installed |
| Double hung window | $450 - $1,100 installed |
| Horizontal roller window | $300 - $700 installed |
| Casement window | $500 - $1,200 installed |
| Impact-resistant window | $1,200 - $3,500 installed |
| Low-E + argon gas window | $1,200 - $3,000 installed |
| Patio door replacement | $1,500 - $3,500 installed |
| Impact sliding glass door | $2,500 - $5,500 installed |
| Hurricane-rated garage door | $2,800 - $6,000 installed |
| Custom or geometric window | $1,800 - $4,500 installed |
In Walnut, the biggest price variables are stucco repair around the rough opening, hidden sill rot under old sliders, and the glass package required by the window’s sun exposure. Every Sightline quote is written before work starts, and it stays the same document through the final invoice.
Neighborhoods We Serve in Walnut
We work across Walnut’s tract-home neighborhoods, from the hillside streets near Pierre Road and Lemon Avenue to the ranch-style subdivisions off Grand Avenue and the two-story developments east of Nogales Street. Our crews know which blocks have the worst stucco weep-screed damage and which elevations catch the strongest Santa Ana wind.
- Snow Creek
- Walnut Heights
- Rancho del Sol
- Vintage Walnut
- Valle Lindo
Response time across Walnut is typically one to two business days for a measured survey, and our live phone line is available 24/7 for questions.
Service Area - Cities Near Walnut
Sightline serves Walnut and the surrounding San Gabriel Valley and Pomona Valley communities. If your job is in Rowland Heights, CA, Diamond Bar, CA, La Puente, CA, or West Covina, CA, we can schedule a measured survey and provide the same written-price process.
Serving Walnut, CA - Our Local Coverage Area
We’re based in the Walnut area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Windows & Doors in Walnut
Choosing a replacement based on the unit price alone and skipping the rough-opening inspection. Original stucco surrounds in Walnut often hide damaged weep screeds and rotted sills, and a new window will fail early if that work is skipped. Our measured survey catches it before the price is written.
Many Walnut neighborhoods have active HOAs, and yes, most require architectural review for visible window or door changes. We provide spec sheets, frame color samples, and manufacturer documentation to support your application. Call (509) 265-6387 and we will help you assemble the submittal.
Once the measured survey is complete and the written estimate is approved, standard window and door orders for Walnut jobs start within one to three weeks, with installation scheduled after the units arrive. Call (509) 265-6387 to schedule your free estimate.
Call Sightline Windows & Doors at (509) 265-6387 for a written, no-obligation estimate on any window or door project in Walnut. We answer the phone live, we show up as scheduled, and you keep every document from the survey to the final photo record.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Walnut Customers Say
"Patio door had dropped and would not lock. They adjusted it rather than selling me a new one, and charged accordingly."
- Simone T."The survey measurements and the quote were the same piece of paper. Nothing changed on install day, which is not what happened with the two other companies we had out."
- Annette R."Replaced eight windows. They showed me the U-factor on the units they were actually fitting rather than the brochure numbers."
- Kofi B.