Snap-On Collar Material Steel Product Type Snap-On Collar For Nominal Duct Diameter 6 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 4MJU2 4MJV2 Compatible with Brand Not Applicable Shape Round Finish Galvanized Includes Not Applicable Compatible with Manufacturer Model Number Not Applicable Compatible with Series Not Applicable