2Pcs Aluminium Alloy Window Light Blocker U Channel Strip,Bedroom Blackout Side Rail Track for Roller Blinds, Blocking Strips for Shades and(Grey,110cm/43.3in)

Aluminium Light Blocking Strip: Our strip are waterproof wear-resistant propertie, with a that can withstand the cuts and scrapes of everyday use, for your bedroom commercial space blackout need, creating a comfortable sleeping environment for you Custom Light Gap Blocker: U-shape design, fit to block light penetration, length can be customised according to your needs, the gap between the two sides of the mounting needs to be in the range of 0.5 - 3.81 cm(1/5 - 1 1/2") Drilling Window Side Light Blocker: This gap blocker is drill install, you just need to put the blackout strip in the right position and the curtains can be moved up and down, then mark the drilled hole and tighten the screws, you can complete the install Reduce Light Leakage: Our blackout strips allow you to say goodbye to the annoying light that's always leaking out, and you can DIY the colours to match your curtains or window frames, turning your room into a cosy, dark sanctuary Note: All blinds must be slightly smaller than the window opening to prevent rubbing against the window frame when raising or lowering the blinds, allowing light to pass through. They can be installed on the front or back of the blinds to block the unblocked portion of the window.