How to Identify What Type of Windows You Have

If you're calling a glass shop, getting a quote, or searching for replacement parts, the first question anyone will ask is: what type of windows do you have? Most homeowners aren't sure -- and that's fine. Window types are easy to identify once you know what to look for.

The Six Most Common Window Types

Single-Hung. The bottom half slides up; the top half is fixed. This is the most common window type in American homes. If only the bottom panel moves, you've got a single-hung.

Double-Hung. Both the top and bottom panels slide up and down. Try pushing down on the top panel. If it moves, it's double-hung.

Casement. The window swings outward like a door, hinged on one side. You'll see a crank handle at the bottom. Common in kitchens and bathrooms.

Slider. One or both panels slide horizontally along a track. Common in basements, bedrooms, and mid-century homes.

Awning. Hinges at the top, swings outward from the bottom. Often found above other windows or in bathrooms. Cranks open like casements but hinges from the top.

Fixed (Picture Window). Doesn't open at all. No hardware, no moving parts -- just glass in a frame. Used for views and light.

How to Tell from Inside

Stand in front of your window and answer these questions:

1. Does any part move? If not, it's fixed.
2. Does it slide up and down? One panel = single-hung. Both panels = double-hung.
3. Does it slide left to right? That's a slider.
4. Is there a crank handle? Side-hinged = casement. Top-hinged = awning.

Those four questions cover 95% of residential windows.

Why It Matters

Knowing your window type determines what parts are available, how glass replacement works, and what your options are. When you call a glass shop, telling them "I have a double-hung window, about 36 by 60, and the glass is foggy" gives them everything they need to start a quote.