Sides of Blinds Light Blocker Extra Long, Self Adhesive Cuttable Light Blocking Strips, White/Black/Gray/Brown Paintable Blackout Bars(Gray,W3.5 cm (1 3/8"))

【 Self Adhesive 】: No drilling required, just peel and stick, perfectly fits any walls. As needed, you can choose to mount blackout strips on the window or roller shade's sides, top, or bottom for full blackout 【 Reduce Light Leakage 】: Light gap blockers effectively block light from entering through the sides of your blinds and shades, allowing you to get the best night's sleep while protecting your privacy 【 Rubber Light Blockers 】: Window light blocker is made of thickened rubber material. It is waterproof & lightweight, and is not easily deformed or scratched during daily use. The soft rubber material will not damage your curtains 【 Flexible cutting & Customizable 】: You can cut the length of the blocking strips as needed, and even irregular gaps can be easily handled. The length of the shades side rail support customisation, please contact us if required 【 Widely Used 】: Blackout side tracks are suitable for honeycomb shades, cellular shades, roller shades and blinds, roman shades, etc. in areas such as offices, media rooms, bedrooms, home theaters or nurseries