One Odd-Size Window, Custom Ordered
The home center measured it and shrugged. The window is an inch too wide here, a few inches too short there, or not a rectangle at all.
Reply within one business day. Or call / text 763-250-3621.
An odd size replacement window is custom ordered: JMB Builders measures the opening, and the window is built to that width and height in the style, color and glass you pick. Nothing is cut down or shimmed out to fit a stock size. One odd-size window is a welcome job across the Twin Cities metro, priced per window, window included, with the lead time on the quote. Photo reply within one business day, or a free in-home estimate.
- Built to the opening, not forced to a stock size
- Priced per window, window included
- Custom ordered; lead time written on the quote
Most replacement windows today are built to order anyway, so an odd size is less of a problem than it sounds. Our supplier's lines are made to the quarter inch in width and height within each style's range. A window that is 29 and a half by 51 is just a window. What matters is that the opening is measured in person, at three points each way, so the order matches the hole and not a guess.
Odd sizes come from a few places. Older houses were framed to the windows they had, not to a catalog. Previous owners sometimes furred an opening down to fit a sale window, leaving a frame inside a frame. And some windows are not rectangles: a half-round over a picture window, a trapezoid in a gable, an octagon in a stairwell. All of those are custom ordered, and the shape, not the size, is what sets the price.
Custom ordered means it is built for you and takes longer to arrive than a window off the shelf. That lead time is written on the quote so you know what you are waiting on before you sign. When it arrives it goes in as an insert or full frame, is flashed and sealed, and is trimmed inside and out. Painting is quoted as a separate line, or paint it yourself.
Get a written quote for this job
Three photos and a sentence is enough: a reply within one business day, or ask for a free in-home estimate. Or text the photos to 763-250-3621.
What you supply
- Photos of the window from inside and outside, and one of the whole wall
- A rough width and height if you have a tape; we measure in person before ordering
- Your pick of style, color and glass, or ask us to match the other windows
- A note if the window has a shape other than a rectangle
What JMB supplies
- An in-person measure of the opening at three points each way before the order
- The window, custom ordered through ABC Supply to the exact size and shape
- Removal of the old window and any furring a previous owner added to shrink the opening
- Sill pan or flashing tape, shims, foam, sealant and exterior capping or trim
- Interior stops or casing, primed and caulked; painting quoted as a separate line
- Photos of the finished window in your job folder
How it is priced: per window
Quoted in writing from your photos, with a reply within one business day. What moves the number:
- Size and style: a tall or wide custom size costs more than a small one in the same line
- Shape: a rectangle vs. a half-round, trapezoid, octagon or arch-top
- Color, glass package and grille pattern on the custom order
- Insert into a sound frame vs. full frame to the rough opening
- Furring or framing changes if a previous owner shrank or altered the opening
- Exterior finish and interior trim kept, matched or replaced
Odd sizes are measured in person before ordering, every time. Photos get you a quote; the measure makes the order right.
How long it takes
Half a day to a day on site once the window is here. The window is custom ordered to the opening and that lead time is written on the quote; it is longer than an in-stock size and depends on the line and the shape.
How your project works
- 1
Send photos, get a written quote
Send three photos of the space and a sentence about what you want. You get a clear, itemized reply within one business day. Prefer a look in person? A free in-home estimate is always an option.
- 2
Pick materials, or bring your own
We help you choose profiles and materials that fit the house and the budget, or match your existing millwork exactly — or you buy the door or trim yourself and we install it. Everything is confirmed before the crew is scheduled.
- 3
Clean, precise installation
The crew shows up on time, protects floors and furniture, and installs with tight joints and consistent reveals. Photos of the finished work go in your job folder.
- 4
Walkthrough and invoice
We walk the finished work with you. If anything is not right, we fix it before we call the job done. Then one invoice, paid by check or direct deposit — no card fees, no payment links.
Situations and options
Odd rectangle
A width or height between stock sizes. Built to the quarter inch in most lines, in the same style and color as a stock window. The most common odd-size order.
Shaped window
A half-round, quarter-round, trapezoid, octagon or arch-top. Custom built to a template or exact dimensions, usually as a fixed unit; the shape sets the price and the lead time.
Opening someone shrank
A frame inside a frame from an earlier quick fix. The furring comes out, the original opening is measured, and a window is ordered to fit it properly.
One Odd-Size Window, Custom Ordered: questions, answered
Can you get a replacement window in a size that is not standard?
Yes. Most replacement lines are built to order in quarter-inch steps, so an odd width or height is a normal custom order. JMB Builders measures the opening in person and orders the window to that size. One odd-size window is a welcome job across the Twin Cities metro.
How long does a custom size window take to get?
Longer than a window that is in stock, because a custom ordered window is built for your opening while an in-stock one is already on the shelf. The lead time depends on the line, the color and whether it is a shaped unit, and it is written on the quote before you sign so you know the wait up front. We schedule the install when the window arrives.
Is it cheaper to reframe the opening to fit a stock window?
Usually not for one window. Reframing means opening the wall, moving framing, and patching siding, drywall and trim, which costs more than the difference between a stock and a custom size. A custom size in the same line is the simpler job. Reframing makes sense only when you want a bigger or smaller window.
Can you replace a half-round or trapezoid window?
Yes. Shaped windows are custom ordered to a template or exact dimensions, usually as fixed units, in the same color and glass as the windows near them. They cost more than a rectangle of the same size and take longer to arrive; both are on the quote.
Why does my window measure differently at the top and bottom?
Old framing moves and old frames sag, so an opening is rarely a perfect rectangle. We measure width and height at three points each and order to the smallest, with room to shim. That is why the measure is done in person rather than from your tape.
Is one odd-size window too small a job?
No. One window is a welcome job for JMB Builders, odd size or not. Send photos and we reply within one business day, or book a free in-home estimate. The window is measured, custom ordered, installed and trimmed like any other.
Recent JMB work, from our job log
59 installs recorded across 30 Twin Cities communities since Dec 2025. Window and door installs for homeowners and the builders we work with. Counts come straight from our job log; no customer names.
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Read morePage reviewed October 25, 2026 · JMB Builders LLC, MN license BC809005 · All windows pages
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