The M-D EPDM Rubber 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 high-quality EPDM Rubber this seal exhibits very high sealing properties for a window and it provides maximum resistance to wear and tear. 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.