U-Shaped PVC Light Blockers – U-Shaped PVC Side Channel Tracks for 100% blackout window treatments
Are you sick of light escaping from the bottom or sides with your blackout blinds? U-shaped PVC light blockers, also known as PVC blackout side tracks or window blackout strip channels, are the solution to remove side lights gaps, and to get complete darkness for any room.
What Are U-Shaped PVC Light Blockers?
These solid U-shaped channels, crafted from tough PVC plastic, and they assemble on the left and right sides of your window frame. They border the sides of your inside-mounted blinds (such as roller shades, zebra blinds, or honeycomb cellular shades) with a tight seal that blocks out all light leakage.
Also referred to as:
Window light gap blockers
Blackout side channels for roller blinds
PVC side light sealing strips for blinds
U channel blackout tracks for window shades
Key Features and Benefits
✅ 100% Side Light Blockage
The U-profile shrouds the blind cloth on either side, avoiding light loss over the splits ultimately discovered in between a window and door frames. These side rails are ideal for bedrooms, nurseries, home theaters, or shift workers rooms where 100% blackout is required.
✅ Durable and Flexible PVC Construction
These window light blockers are constructed from high-quality, UV-stable PVC which means they will not warp in heat, crack on freezing temperatures or discolour due to sunlight. It is a true alternative to PVC which means it is lightweight & easy to work with and works wonders with almost all window finish — staying strong for at least 10 years.
✅ Universal Compatibility with Inside-Mount Blinds
Works with most types of inside-mounted blackout shades, including:
Blackout roller blinds
Zebra shades (day-night blinds)
Honeycomb blinds (cellular shades)
Roman shades with blackout lining
Cordless blackout shades
Day and Night blinds
Thermal insulated blinds
Vinyl blackout shades for bedroom or nursery
Inside mount blinds with side gaps
✅ Trim-to-Fit Customization
Each strip can be easily trimmed to your window height using a standard utility knife or fine-tooth saw. Custom lengths available upon request for large orders.
✅ Tool-Free or Screw-In Installation
Choose between:
Adhesive-backed installation: Peel-and-stick for a fast, no-drill application
Screw-mounted installation: Secure with screws for permanent placement or high-humidity rooms
Why Choose U-Shaped Light Blockers Over L-Shaped?
While L-shaped light blockers are perfect for sealing a single side edge, the U-shaped version provides a dual-channel enclosure, creating a more complete seal. It offers a snug fit on both sides of the blind fabric and is ideal for larger or deeper window frames where extra coverage is needed.
Product Specs
Material: Rigid PVC plastic
Shape: U-Profile / U-channel
Color Options: White, Black, Beige, Gray (custom colors available for bulk orders)
Length: Standard 48", 72", or custom-cut
Included: 2 side rails per set + adhesive tape (optional screws available)
Perfect for:
Blackout shades for sleeping during the day
Light blocking for nursery or kids’ rooms
Home theater blackout window treatments
Office meeting rooms needing light control
RV or mobile home blackout window installs
Installation Tips
Clean window frame surface before installation
Position as close to the blackout fabric edge as possible for best results
Looking for the best blackout accessories for windows? These U-shaped PVC light blockers are your perfect partner for a light-free, sleep-friendly environment. Contact us for OEM options, bulk pricing, or custom extrusion lengths.
FAQs
Q: Will these light guards work with my existing roller blinds?
Yes. The light blockers are U-shaped for a snug fit on common roller blind edges, especially if you plan to use them with inside mount installs.
Q: Can I install these side tracks without tools?
Absolutely. Our U-shaped strips are backed with peel-and-stick adhesive — so no drilling or screws.
Q: Can U-shaped PVC side rail tracks be cut to fit my window?
Yes. U shaped side tracks made from flexible PVC, Trimmings can be cut to exact length using regular scissors or a box cutter.
Q: Do they really block 100% of the light?
Yes. When used with blackout blinds, they eliminate side light gaps for complete darkness.
Q: Are custom sizes available?
Yes. For large orders or special window configurations, we offer OEM custom cutting.
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