Vent Hood, For Nominal Duct Diameter 4 in, Gas Appliance Category Category I, For Duct Height 7 1/2 in, For Duct Width 7 1/2 in, Inlet Diameter 4 in, Material Aluminum, Overall Length 11 in, Product Type Vent Hood, Inside Diameter 4 in, Material Thickness 20 ga, Weight 7 lb, Maximum Pressure Rating Not Applicable, Maximum Temperature Rating 575 Degrees F, Seal Material Not Applicable, Standards Not Applicable, Finish Flat, Color Silver, Overall Height 7 3/8 in, Shape Rectangular & Round