
Measure & Install
How To Measure Roller Shades
3 min read

You've got this! Just follow our simple steps.
Size range: Our roller shades fit windows from 24" to 118" wide and 24" to 120" high.
Before You Start
Grab these tools:
- Metal tape measure (steel works best)
- Phone notes or pen & paper
- Step ladder (if needed)
Quick prep: Clear your window area, check for obstructions like handles or locks.
Important: Measure each window individually - even identical-looking windows can vary!
Step 1: Choose Your Mount
Pick what works best for your window:
Inside Mount ✓ Most popular
- Mounts inside the window frame for a clean, built-in look
- Requires 2" minimum depth from glass to front of frame to allow bracket to fit property inside
- Showcases your window trim
- Maximum light blocking and privacy
- Check for obstructions that might block shade operation
Outside Mount
- Mounts on the wall around your window frame or ceiling
- Covers the entire window frame and extends beyond it
- Perfect for shallow windows (<2" depth) or blackout needs
- Makes small windows appear larger
No Window Frame? (Ceiling Mount)
- Mount directly to ceiling above window opening
- Common for modern windows or architectural openings
Step 2: Measure Width
Inside Mount
Width: Measure across the top of window frame only, edge to edge Record exact measurements - we'll make the deductions. Round down to nearest 1/8" if absolutely needed.
Outside Mount
Width: Add 2-3" on each side of window opening for light control. Measure straight across where brackets will mount. Final size will be exactly what you order.
No Frame (Ceiling Mount)
Width: Measure across the top of the window exactly where you'll want your shade to sit above it.
Step 3: Measure Height/Drop
For all mount types: Decide where you want your shade to end, then add 3-4" extra for better coverage. The extra length gives you flexibility and better light control.
Height measuring:
- Use the tallest measurement of your window
- Common ending points: windowsill, floor, or anywhere in between
Step 4: Record Your Measurements
Write them down as Width × Drop (W × D)
Width Rounding Rules:
- Inside mount: Round down to nearest 1/8"
- Outside mount: Round up to nearest 1/8"
- Never round to nearest 1/2" or whole inch
Control side: Choose left or right for your chain or motor charging port
For manual shades: Pick the side with no obstructions for the chain to hang freely
For motorized shades: Choose a side easily accessible at the top of the window where your charging port will be located
Ready to order? Your measurements are good to go
Questions? Email us at hello@shadeit.com, and we’re happy to help. No shade.