Best Seller | AMERIFLOW G5010C Snap On Collar,Round,Galvanized Steel Snap-On Collar, Material Steel, Product Type Snap-On Collar, For Nominal Duct Diameter 10 in, Thickness Not Applicable, Overall Diameter 9 3/4 in, Compatible with Product Type Fiberglass Back Diffusers, End Type Bend Tabs, Overall Height 4 in,... ... more AMERIFLOW G5010C Snap On Collar,Round,Galvanized Steel Snap-On Collar, Material Steel, Product Type Snap-On Collar, For Nominal Duct Diameter 10 in, Thickness Not Applicable, Overall Diameter 9 3/4 in, Compatible with Product Type Fiberglass Back Diffusers, End Type Bend Tabs, Overall Height 4 in,... | | $11.69 go to store |