Best Seller | AMERI-VENT 3FSP Firestop Support Plate,Type B,3" Firestop Support Plate, For Nominal Duct Diameter 3 in, Gas Appliance Category Category I, Material Steel, Inside Diameter 3 in, Load Capacity Not Applicable, Material Thickness 26 ga, Compatible with Strapping Size Not Applicable, Seal Material Not... ... more AMERI-VENT 3FSP Firestop Support Plate,Type B,3" Firestop Support Plate, For Nominal Duct Diameter 3 in, Gas Appliance Category Category I, Material Steel, Inside Diameter 3 in, Load Capacity Not Applicable, Material Thickness 26 ga, Compatible with Strapping Size Not Applicable, Seal Material Not... | | $15.59 go to store |