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ZSTARR

ZSTARR U Channel Aluminium Alloy Light Blocking Strips for Roller Blinds Light Gap Blockers Window Shades Side Rail Tracks Bedroom Sleep Nursery (Grey,58",2Pcs)

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jul 18
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Color: U-shaped Grey-2pcs


Size: 58‘’


Features

  • Why we need to install light blockers for shadesMost blinds and blackout shades are made slightly narrower than the window frame to allow smooth raising and lowering. This design often causes light leakage from the sides. If your blackout blinds or shades still let in unwanted side light, this common side gap issue can reduce room darkening. ZSTARR light blocking strips are designed to help solve this problem and improve overall room darkening performance.
  • Latest U-shaped Aluminum Alloy Light BlockersZSTARR light blocking strips are made of thickened aluminum alloy tracks for long-lasting durability. The U-shaped design allows the blockers to be installed along the sides of window shades and blinds, providing more stable coverage. By fitting closely against the edges of your blackout blinds and shades, these light blockers help reduce light leakage through the sides. They create a darker indoor environment, helping improve privacy and support better sleep quality. Designed to reduce side light gaps, not to replace blackout shades.
  • Easy To InstallSimply fasten the light blockers onto the window frame with screws for a secure fit. After removal, the side light blockers can be reused by reinstalling the screws. The light blockers can be combined or cut to length using a cutting machine for a custom fit. Size: 58 1.6 0.99 inches (2 PCS). Accessories include side covers (4 PCS), installation instructions, and screws. For maximum coverage, install as close to the blackout shades as possible. Please refer to our installation video for proper installation and alignment.
  • U-shaped Light-blocking Side TracksThese blackout side tracks are ideal for night-shift workers, light-sensitive sleepers, or anyone creating a darker room during the day for sleep, movies, or gaming. Applicable to roller shades and blinds, zebra shades, and other blinds and shades. Not suitable for cellular shades or honeycomb blinds. Recommended for inside-mount blinds with flat window frames and sufficient depth ( 1 in). Designed for blinds with a slim bottom rail (recommended width 0.5 in) and to reduce common side light gaps ranging from 0.21.5 in, allowing closer edge coverage and improved room darkening.

Description

Why do blackout blinds still leak light from the sides? Most blinds are made slightly narrower than the window frame, which creates side gaps and allows light to enter. What side gap size are these light blockers designed for? Designed to reduce common side light gaps of 0.2–1.5 in along blackout blinds and shades. What blinds are compatible with these U-shaped side tracks? Works with roller shades, zebra shades, and similar blinds. Not suitable for cellular or honeycomb shades. What measurements should be checked before ordering? Inside-mount window depth ≥ 1 in. Recommended bottom rail width ≤ 0.5 inch Do these light blockers replace blackout shades? No. They are designed to reduce side light gaps and improve edge coverage when used with blackout shades. U-shape Light Blockers L-shape Light Blockers PVC Flexible Track Aluminum Flexible Track Motorized Track Motorized Roller Shades Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store

Material: Aluminum


Brand: ZSTARR


Color: U-shaped Grey-2pcs


Opacity: Blackout Inches


Recommended Uses For Product: Indoor


Opacity: Blackout Inches


Operation Mode: Manual


Additional Features: Light blocking


Mounting Type: Inside Mount


Water Resistance Level: Not Water Resistant


Control Type: Manual


Number of Items: 2


Item Weight: 1.47 Kilograms


Size: 58‘’


Number Of Panels: 2


Material Type: Aluminum


Product Care Instructions: Spot Clean Only


Brand Name: ZSTARR


Recommended Uses For Product: Indoor


Room Type: Bathroom, Bedroom, Home Office, Kids Room, Media Room


Included Components: User Manual


Model Number: U40 -Grey-58.5in-2pcs


Manufacturer: ZSTARR


Unit Count: 2.0 Count


Color: U-shaped Grey-2pcs


Shape: Rectangular


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • A little expense for what they are, but they do work and are made well
Color: U-shaped Custom Size: 44''-115''
Review Image by E Reed
I have a Yoolax roller shade in my bedroom that is surface mounted on a window. Quite a bit of light gets past the edges when closed, so I bought these to help cut down on the light leakage. These are very sturdy and have a soft fabric "brush" on the inside edges to protect the edge of the window shade. I had to shorten these channels to fit my windows, I just used my table saw with a fine tooth blade to cut through the aluminum channel. The plastic cover on both ends is removable, just make sure to clean out the channel as there are some grooves that the end piece needs to fit in to lock it in. I used a thin run of double sided tape to adhere these to the outside trim of the window. The weighted bottom of the Yoolax shade fits nicely in the channel and the shade still opens and closes without binding. Looks nice and the color is very close to the metal valance of my roller shade. ... show more
Reviewed in the United States on March 17, 2024 by E Reed
    • high quality, cuts well
Color: L-shaped White-2pcs Size: 79‘’
works well and cut down to size easily. i recommend it to reduce light bleed around shades
Reviewed in the United States on April 28, 2026 by H. Wrenn
    • Helps block extra light
Color: L-shaped White-4pcs Size: 79‘’
I got these to put around some roller shades I had installed as they were inside the frame and did not go edge to edge. They certainly work but aren’t perfect. Installation was mediocre. I had to cut these down with a small hand saw and the edge was very rough. I put that at the top behind the valence but probably should have sanded it for safety. The peel off paper on the adhesive was also a pain to remove. It ripped several times when I was peeling so I needed a small razor to find the edge again. The adhesive itself is very sticky. So much so that when I tried to quickly remove it after touching it to the wall to align it better, it took off some of the paint. I don’t think there’s any risk of it falling off, but will update this review if it ever does. I don’t use the hardware or the included as the adhesive felt plenty strong. Similarly, I haven’t added the included blackout tape to line the inside yet. I’m sure that will help a bit. As it stands though, this certainly does help block out some of the light but you’ll really need to use guides to push a shade flush against the inside track if you want it to block everything. It looks pretty good now that it’s installed and I could probably paint over it if I wanted to match the wall color in the future. The value is also pretty good relative to other options. Size is fine now that I cut it down. Overall it’s a good option, though I’d prefer to see easier adhesive tape removal and some kind of included guide to keep it level when installing. Feels easy enough to include a plastic piece that can clip on to each end that can keep the piece square to the edge of the frame when you’re installing. ... show more
Reviewed in the United States on June 2, 2024 by D4st
    • Great quality, and works!
Color: L-shaped Custom Size: 44''-115''
I was a little reluctant to buy it because I know they aren’t returnable. I measured with my tape measure, confirmed the measurements when they messaged me after purchase and I received them in a very hard cardboard tube so the pieces were not damaged or bent at all. After ordering two sets and seeing how great they were and worked, I ordered two additional sets, and it was very happy with the quality and with the consistency! The measurements were perfectly spot on. I don’t think the black tape is necessary for anything. I think it’s supposed to absorb light, but it doesn’t do anything so I left that off. The tape that comes on the pieces with the adhesive is very strong and super easy to stick up! ... show more
Reviewed in the United States on June 11, 2024 by May I Suggest
    • Adhesive way to strong - damaged my wall and the product snapped
Color: L-shaped Black-2pcs Size: 58‘’
I was setting this up in my kids room on two windows. I managed to do the first window without any issues, but I misaligned the second window and some light was creeping through. I thought oh no problem, I see where I misaligned the initial placement. Wanted to redo my placement and I cannot remove these from my wall! I removed one side of the blockers with minimal issues, but this other side ended up damaging my wall. The adhesive was so strong the blocker ended up snapping as I was trying to remove it. I'm now stuck with half of this light blocker in my kid's window frame and I have no idea how to remove it. At this point, I just need to remove it with minimal damage to my window frame. If you can do this on your first try, you're golden and works like a charm. Slight misalignment and need to redo the placement? Expect a headache. ... show more
Reviewed in the United States on October 26, 2024 by Clay V
    • Exactly as advertised, easy to trim to length, and install.
Color: L-shaped White-2pcs Size: 58‘’
Exactly what was advertised, easy enough to cut, and worked perfectly for my application which was to reduce light leaking above the curtains!
Reviewed in the United States on January 12, 2026 by LdRockingham
    • Need to add tape to hold
Insufficient tape to hold it firmly.
Reviewed in the United States on May 11, 2026 by Brian
    • Perfect for my requirement
Review Image by Naresh
Review Image by Naresh
Review Image by Naresh
Very good quality and it suited very well with my window blinds and looks very good. And did not use any tools to install just peel and stick. Highly recommend this product.
Reviewed in the United States on April 26, 2026 by Naresh

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