Duck Brand foam weatherstrip seals out drafts and humidty to keep your home comfortable all year long Self stick adhesive foam seal forms an airtight barrier against drafts and outside air--keeping out dust, insects, pollen and minimizes noises This foam seal is 0.5 inches thick to use for extra large gaps around doors and windows. Can be used for gaps from 0.25 inches to 0.5 inches Prior to installation, please clean surface of dust and dirt. For best results apply adhesive tape products to clean and dry surfaces when temperature is above 50° F Instructions: 1. Remove white liner and apply foam tape to surface. 2. Use scissors to trim to fit and press firmly in place. 3. Discard paper liner backing MADE IN THE USA: This Duck Brand product is made in America