These 3 3/4" seals fit garage doors manufactured by: Amarr, Arm-R-Lite, CHI, Clopay, DBCI, Deldon, Gadco, Martin, Raynor, Richard Wilcox, and Safeway garage doors. The T rubber seal is constructed using durable, black EPDM synthetic Vinyl. The advantages of using these seals is that they stay soft and flexible to temperatures to 65 degrees below zero Fahrenheit, they conform to uneven floors with over one inch compression, contact ensures a tight seal, you will save money by reducing energy loss year round and these seals can be installed quickly and easily.