What is a garage door window, and how do I replace it?

A window is the glazed part that lets light into the garage. Here's how to identify yours.
A window is a glazed panel built into one or more panels of your garage door, to let light through.

What to measure

• The width and height of the window (outer frame dimensions)
• The thickness of the panel it's built into
• The shape: rectangular, oval, round, barred or not

And then? Send us the dimensions and a photo of your window (fitted, if possible): we'll suggest the matching reference.

Updated on: 08/07/2026