SP-B022-01P insulated wall sleeve constructed of G90 HDG galvanized steel with a baked corrosion-inhibiting urethane primer and baked-polyester topcoat enamel. A sleeve is required for new installations. Dimensions of 14-1/8 in. D x 42 in. W x 16-1/16 in. H - industry accepted. This standard exterior grille is made of durable aluminum to protect chassis components and prevent air recirculation. Includes air deflectors and gaskets to prevent condenser air recirculation.