Foam Blocks, Insulating Tape, Prevents Air Leaks, Easy to Cut, Use And Install,

Option 1: 2 Foam Blocks, 1 Sealing Strip, 1 Roll of Tape. Option 2: 4 Foam Blocks, 4 Sealing Strip, 2 Roll of Tape. 【Customizable】Easily cut the foam blocks to match your window opening size for a close fit.

Foam blocks and insulating tape are ideal for sealing air leaks in cold or energy-efficient buildings, creating a tight and soundproof environment.