MiideaYin Light Blocking Strips – Total Blackout Solution for Perfect Darkness! Premium Design for Maximum Performance: Made of high-quality PVC to minimize reflections and enhance light-blocking efficiency. Durable Soft Bristle Strips: High-density bristles inside the track prevent wear and ensure long-lasting performance. Thickened Adhesive Strip: Strong, reliable adhesion stays firmly in place—no slipping, even on uneven surfaces. Secure Screw Fixation (Reusable): For a permanent hold, use the included screws; easily removable without damage. Total Blackout Effect – No More Light Leaks! Our U-shaped PVC light-blocking strips seal gaps on both sides of curtains and blinds, blocking intrusive light completely. Enjoy 100% darkness for enhanced privacy and deeper sleep. Perfect for home theaters, nurseries, and bedrooms! Easy Installation – Customizable & Versatile: Trim-to-Fit Design (58" x 1.58" x 1.78") – Cut with a saw for a perfect fit. Two Installation Options: Peel & Stick (Quick): Simply remove the adhesive backing and press onto the window frame. Screw-On (Permanent & Reusable): Secure with included screws for a sturdy hold—remove and reuse anytime. (Pro Tip: Place blockers close to window coverings for maximum light blockage!) Wide Compatibility – Works with Most Window Treatments: Ideal for blackout curtains, honeycomb shades, roller blinds, Roman shades, and shutters. Perfect for bedrooms, offices, home theaters, and nurseries—anywhere you need complete darkness! Hassle-Free After-Sales Service – Buy with Confidence! In order to provide you with a smooth shopping experience, our products are shipped after strict quality inspection. If there are any damaged parts, please contact us as soon as possible and send us pictures. Our most professional after-sales team will solve your problem in the best way possible! Note: Before purchase,Ensure your window depth ?1.78" and thickness ?1.3" (lower rod) for proper fit. Upgrade your space with MiideaYin Light Blocking Strips—the ultimate solution for privacy, darkness, and better sleep!