Window Brand Identification Guide
How to find out who made your windows — in about five minutes.
How to Find Your Window Manufacturer's Name
Knowing your window brand helps with ordering parts and glass — but it's rarely essential. Most repairs can be done without it.
The quickest route is the glass: most manufacturers mark a corner of the pane. If you find nothing there, work through the places below. If you still can't find it, don't worry — send us a clear photo of the whole window, a close-up of the hardware and any label you can find, and we can usually identify it.
| Where to look | What you'll find |
|---|---|
| Glass etching | Most manufacturers etch a small logo or name into a corner of the glass. Check every corner of every pane — it can be tiny. |
| Spacer stamp | On double-pane glass, look at the metal or foam strip between the panes. It often carries the glass maker's name and a date code. |
| Frame or sash label | Open the window and check the side jambs, the top and bottom of the sash, and the frame where the sash sits. Many brands put a sticker or stamp there with the model and date. |
| Hardware stamps | Crank handles, operators, locks and tilt latches are often stamped with the brand or the hardware maker. |
| Paperwork | Original purchase paperwork, builder documents or a home inspection report may list the window brand. |
Clues when there's no label
- Vinyl-clad wood exterior with wood inside — common on Andersen 400 Series and many clad windows from other makers.
- Thin film visible between the panes — a sign of Heat Mirror glass, used widely by Hurd.
- Blinds or shades between the glass — a feature offered by Pella and some other makers.
- Composite frame that isn't wood or vinyl — may be Renewal by Andersen (Fibrex) or a fiberglass line such as Marvin's.
These are hints, not proof — several brands share similar features. See our brands page for the makes we repair most.
Brand-by-Brand Clues
| Brand | Common clues |
|---|---|
| Andersen | Name or logo etched in a lower glass corner; labels on the sash or side jambs; Fibrex composite frames on Renewal by Andersen and the 100 Series. |
| Pella | Name etched in the glass; blinds between the glass or a snap-in interior glass panel on many wood models. |
| Marvin | Name etched in the glass; a serial number on the jamb or the top of the sash. |
| Hurd | "Heat Mirror" printed on the spacer; a faint film visible between the panes. |
| JELD-WEN | Name etched in the glass; the name on vinyl sash locks. |
| Kolbe, Weather Shield, Norco | Name etched in the glass and labels on the jambs. Custom shapes and large premium wood units often point to Kolbe. |
These are common clues, not guarantees — several brands share features. When in doubt, send a photo.
Where Labels Hide, by Window Type
- Double-hung and single-hung: raise the bottom sash and check its top edge and the side channels. On tilt-in sashes, check the sash edges when tilted.
- Casement and awning: open the window fully and check the hinge-side edge of the sash and the area around the crank operator.
- Sliders: check the edge of the fixed panel and the bottom track.
- Any double-pane window: read the printing on the metal or foam spacer between the panes — it often shows the glass maker and a date code.
What to Photograph for a Quote
- The whole window from inside — and from outside if you can reach it safely.
- A close-up of any etching in a glass corner.
- The printing on the spacer between the panes.
- Any label on the frame or sash.
- The crank, lock or latch.
- The problem itself, up close.
Text the photos to (224) 209-0862 or send them through our quote form.
Related repairs: Window brands we repair · Window hardware repair · Foggy window repair
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Send us a photo of the window and its hardware. We'll identify it and tell you what the repair involves.
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