How to Find Out Who Made Your Windows

Sometimes you need to know who made your windows in order to find a warranty, a replacement, or otherwise find the proper dimensions for a remodel. The good news is that there are multiple ways for you to find out

Inspecting for Window Manufacturer Stickers or Labels

If you’re not sure who manufactured your windows, the first place to look is for a sticker or label on the window itself. These are typically located in the lower corner of the window, near the sill. The label should have the manufacturer’s name and logo, along with some other important information such as the window’s model number, energy efficiency rating, and U-factor.

If there is no sticker or label on the window, it’s possible that it was manufactured before such labeling was required by law. In this case, you’ll need to look for other clues to identify the manufacturer. If you need help in choosing and installing new windows, check out Bill Butters Windows.

Checking for Other Clues

If there’s no sticker or label on the window, there are a few other things you can check to try to identify the manufacturer. First, take a look at any paperwork that came with the window when it was installed. This might include an invoice, receipt, or installation manual. These documents should list the manufacturer’s name and contact information.

If you can’t find any paperwork, try looking for a small metal plate that might be affixed to the window. This plate would likely be located near the operable parts of the window, such as the crank handle or locking mechanism. The manufacturer’s name and logo should be stamped into this plate.

If you’re still having trouble identifying the manufacturer, you can try contacting a local window dealer or contractor. They may be able to help you identify the manufacturer based on the style and construction of the window. Take pictures on your smartphone from multiple angles to have visual evidence to send via email or show in person.

Once you’ve identified the manufacturer, you can contact them directly with any questions or concerns about your windows.

Take the Measurements

If you find the AAMA or WDMA label, but it doesn’t have the manufacturer’s name, you’ll need to take some measurements. With a tape measure, get the width (in inches) and height (in inches) of the entire window, including the frame. These measurements will be needed to look up the manufacturer in the AAMA or WDMA member directories.

Even without these, having the full dimensions will help you, or others, to properly identify the windows.

Markings in the Corner of the Window

The most common place to find a label indicating the window’s manufacturer is in the lower corner of the window, near the sill. The label should have the manufacturer’s name and logo, along with some other important information such as the window’s model number, energy efficiency rating, and U-factor.

If those aren’t there you may find the AAMA or WMDA marks. The American Architectural Manufacturers Association (AAMA) and the Window and Door Manufacturers Association (WDMA) require their members to place a label on their products. The label should have the manufacturer’s name, the product’s identification number, the date of manufacture, and the words “AAMA” or “WDMA.”

Depending on the materials used to build the window there might be additional serial numbers or marks that can be used to track down the exact window model.

Google Is Your Friend

Finally, don’t underestimate the power of the Internet. Take the pictures, list the measurements, and somewhere online there will be someone likely to have the answer you need to find your windows’ manufacturer!