1. ADJUSTABLE - This package includes 2 pcs of 1 in x 1 in x 6.5 ft foam tape, total 13 feet long. 2. PREMIUM OPEN CELL FOAM TAPE - Made from NBR+PVC foam material, This foam weatherstripping tape can be used as insulation, shock absorption and sound absorbing materials, which not only helps a window air conditioner cool efficiently in the summer and helps refrain heat loss in the winter,but also for sealing out creatures, and dust around window air conditioners. 3. EASILY INSTALL FOAM INSULATION TAPE - The air conditioner window foam is easy enough to customize and cut to size with scissors or blade, and bend easily and conform to any shape. 4. EASY TO USE - The air conditioner insulation foam can be placed on top of unit and lower window to compress seal for insulation, which provides all season protection to seal in climate controlled air, seal out drafts and dust, reduces noise and vibration from the outside.