Diffusers and Fittings

Hart & Cooley 1110 Duct Ring, 10 Inch, For Use with No 16 Steel Round Diffuser, Steel, Golden Sand Enamel

DiversiTech 650-300 Egg Crate Louver, 2 ft H x 2 ft W Duct, Polystyrene, 1/2 Inch Wall Opening, White

DiversiTech 650-200 Egg Crate Louver, 4 ft H x 2 ft W Duct, Polystyrene, 1/2 Inch Wall Opening, White