9/16 in. x 5/16 in. x 10 ft. Black EPDM Cellular Rubber Weather-Strip Tape Cushioned Ribbed. The finest quality self-stick tape. It will not harden crack or freeze, even at 40 below 0. It is a high compression product which will spring back to shape even after long exposure to sub-freezing conditions. It is guaranteed for 10 years. Will not harden, crack or freeze even at 40 below 0. Fills extra-large gaps will not harden, crack or freeze can be applied to interior or exterior surfaces. EPDM rubber foam has 10-year guarantee. Saves money and energy. Easy to install.