Duck Brand Heavy-Duty Self Adhesive Weatherstrip Seal for Large Gap, White, 3/8-Inch x 1/4-Inch x 17-Feet, 1 Seal, 282433 Self-adhesive, durable EPDM rubber seals the perimeter of outside doors and windows Blocks out drafts, air leaks, dust, pollen and insects in both cold and warm weather Will not freeze or crack in temperatures down to -40 F 10-year guarantee As stated in the instructions, total seal length is 17 after peeling the seal in half