See the Difference Side Channels Make
Watch this 8-second before-and-after comparison.
Blackout Side Channels for Roller & Cellular Shades
Choose Your Side Channels
One set includes two complete Side Channels—one for each side of one window.
Removable – Snaps on & off whenever needed. Ideal for cleaning, tilt-in windows, or easy window access.
Permanent – Slimmer profile for tighter spaces. Attaches securely with our premium adhesive and can be removed later with little to no damage to properly prepared surfaces.
Ready to order? Choose your Side Channels below.
Not sure which product is right for your shades? See how Side Channels work →
NEW 30″ Size for Smaller Windows
Have a shorter window—or need extra length? Our 30″ white Side Channels are ideal for smaller windows with less cutting and waste, or can be butted against a longer track for extra-tall windows. Limited quantities available.
- FREE delivery in the lower 48 states. Ships next business day from Illinois.
- Plus new lower rates for our Canadian, UK and Australian customers.
- 30-day from date of received return policy.
Not Sure Which Side Channels You Need?
Removable Side Channels
Best if you need access for cleaning, tilt-in windows, screens, or window hardware.
Our removable system uses two magnetic adhesive strips. One strip attaches to your window frame or wall, while the matching magnetic strip comes attached to the Side Channel. The Side Channel simply snaps on and off magnetically whenever you need access—the wall-mounted strip stays in place.
✓ Pops on and off in seconds
✓ Easy access for cleaning or tilt-in windows ✓ Inside mount requires about 5/16″ clearance per side (about the width of a pencil)
Permanent Side Channels — Most Popular
Best for a long-term installation or when space is tighter. The slimmer profile attaches directly to your window frame or wall with our premium adhesive.
✓ Slimmer profile for tighter spaces
✓ Secure, long-term installation
✓ Can later be removed with little to no damage to properly prepared surfaces ✓ Inside mount requires about 3/16″ clearance per side (about the thickness of 3 pennies)
Both versions provide the same light-blocking benefit—the difference is how they attach and how much clearance they require.
Will Side Channels Work With My Shades?
Roller Shades
Yes — Side Channels are an excellent choice for roller shades.
The adjustable channel surrounds the edges of the shade fabric and bottom rail, helping block light that normally leaks around the sides.
✓ Helps block gaps caused by shade curl or bowing
✓ Adjustable opening fits different shade and bottom-rail widths
✓ Works with inside- or outside-mount roller shades
Cellular / Honeycomb Shades
Yes — our adjustable Side Channels are uniquely designed to work with many cellular / honeycomb shades.
The adjustable opening can accommodate thicker cellular shade fabric and bottom rails while helping block light along the sides.
✓ Works with many blackout cellular shades
✓ Adjustable opening accommodates different shade thicknesses
✓ Inside- or outside-mount options available
Ready to Block the Light Gaps Around Your Shades?
Choose your attachment method, color, and length above to order your Side Channels. Each set includes everything needed to create Side Channels for one window.