Snap-On Collar, Material Steel, Product Type Snap-On Collar, For Nominal Duct Diameter 8 in, Thickness 18 ga, Overall Diameter 14 in, Compatible with Product Type Perforated T-Bar Diffuser, End Type Snap Lock Coupling, Overall Height 2 in, Compatible with Grainger Part Number 4MJU3, 4MJU8, 4MJV1, 4MJV3, Compatible with Brand Not Applicable, Shape Round, Finish Galvanized, Includes Not Applicable, Compatible with Manufacturer Model Number Not Applicable, Compatible with Series Not Applicable WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)