This Louisville AL2240OLG-RS Aluminum framed attic ladder offers an R5 insulated door with weather stripping factory installed providing more energy efficiency than a traditional attic ladder. Features improved squareness and predrilled holes for ease of installation. Designed for attic opening of 22.5 In. x 63 In. and fits ceiling heights from 10 Ft. to 12 Ft. Gas piston system allows easier opening and closing of the door. This attic ladder has working load capacity of 375 Lb.