The M-D PVC Sponge Tape Window Seal for Ex-Small Gaps is designed to protect against drafts moisture dust and insects. Save on energy by sealing windows keeping the heat or air conditioning from escaping. Made of PVC closed-cell sponge this seal exhibits great sealing properties for a window. The seal provides medium resistance to wear and tear and high water resistance. The self-adhesive design is easy to install by simply pressing onto a clean and dry surface. No hardware required. Before installation cut to desired length using scissors.