Aluminum Bottom Seal Retainers 1-3/4" x 1-3/4" ,Garage Door Aluminum Bottom Seal Retainers Retainers accept 1/4" T-style rubber or vinyl seals, and T-Bulb Seals (available above). Conforms to uneven floors. Contact insures tight seal. Saves money by reducing energy loss year round. ACTION aluminum bottom seal retainers are made of high strength aluminum ore. Available in Mill finish. Designed to be versatile and longer lasting. Installs quickly and easily in just minutes. 1-3/4" X 1-3/4" Adjustable Bottom Seal Retainer ,4ft Seal Retainer (Actual Length 49") ,4'-1" X 1-3/4" X /1-3/4" Aluminum Seal Retainer ,1-3/4" X 1-3/4" Adjustable Bottom Seal Retainer ,8ft Seal Retainer (Actual Length 98") ,8'-2" X 1-3/4" X 1-3/4" Aluminum Seal Retainer ,6mos Manufactures Warranty