Product Description Features: Using our u shape window air conditioner foam block can significantly improve your AC's efficiency by preventing air leaks. Backed by a windproof tape and a self-adhesive sealing strip, it can improve the performance of your unit Our Foam Block also incredibly easy to install. Simply measure the opening size, cut the foam block according to the size, and insert it Specifications: Material: foam Color: white, black Size: Foam block: approx. 9.84 x 3.94 x 1.97 inches/ 25 x 10 x 5 cm Tape: length approx. 394 inches/ 1000 cm Sealing strips: approx. 197 x 2 x 0.2 inches/ 500 x 5 x 0.5 cm Package includes: 4 x Foam block 1 x Tape 1 x Self-adhesive sealing strips Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.