Galvanized Steel B-Vent Cap, 4", 26 Gauge

Metal-Fab's Round and Oval Type-B Vent Is Listed By Underwriters Laboratories For Use with Approved Category 1 Gas Furnaces, Heaters, and Boilers. A Category 1 Appliance Operates with A Non-Positive Vent Static Pressure. The Double Wall Design Of B-Vent Enables The Product To Be Used In Homes and Commercial Buildings At Close Clearance To Combustible. Metal-Fab's B-Vent Design Incorporates Features That Make Installation Quick, Easy, and Safe. Some Of Those Features Are. Elimination Of Sharp Edges By Hemming The Flue and Casing. Assembly & Disassembly, Without Tools, Using Positive Twist Lock. 360° Rotation Of Small Diameter Fittings Using Swivel Tees, Wyes, and Elbows. Space Savings Inside Standard Stud Walls Using Oval Pipe. Inner Material: Aluminum,Inner Wall - 30 Gauge