The Dock Seal/Shelter Combination is used with a 96"W x 120"H door. The top header is constructed of wolmanized lumber and is built with a slope to allow for water run-off. Header measures 114"W with a 30"L drop curtain. Side (verticals) measure 120" tall and contain high density foam mounted to treated lumber. The verticals are mounted on wooden boards (the face of the vertical measures 12"W and tapers to 9-1/2" at wall) allowing wall mounting down the length of the vertical pieces. Application with flush dock to building in conjunction with an Edge-O-Dock use a 20" projection Dock Seal. To ensure proper size complete and fax the survey sheet shown below. Units are non-returnable.