Metal-Fab® M Series 3M4 Gas Vent Pipe, 3 in, 48 in L, Twist-Lock, Aluminum Alloy/Steel

Metal-Fab® Gas Vent Pipe, M Series, 3 in Nominal, Twist-Lock Connection, 0.012 in, 0.018 in Gauge, Aluminum Alloy/Steel, Galvanized, 530 deg F, 48 in Length

Metal-Fab® round and oval type B vent is listed by Underwriters Laboratories for use with approved category I gas furnaces, heaters and boilers. A category I 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® B vent design incorporates features that make installation quick, easy and safe.

• SureLock positive twist-lock
• Elimination of sharp edges by hemming the flue and casing
• Assembly and disassembly without tools, using positive twist-lock
• 360 deg rotation of small diameter fittings using swivel tees, wyes and elbows
• Space savings inside standard stud walls using oval pipe
• The vent shall be of the double wall, factory built type for use with approved category I appliance burning natural or LP gas, which produce flue gases exhausted at temperatures not exceeding 550 deg F
• The vent pipe shall incorporate a push tab locking system to prevent disassembly of vent during or after installation
• Vent shall be tested and listed for a min clearance to combustibles of 1 in for sizes 3 to 24 in Dia and 2 in for sizes 26 to 30 in Dia
• B vent shall be installed in accordance with the vent manufacturer's installation instructions, UL listing and state or local codes
• Type B vent shall be warranted by the manufacturer against defects in material and workmanship for a period of 1 Year from the date of the original installation
• Air insulated
• Vent overlaps 1-1/2 in when joined together
• B vent products shall be listed to UL 441 and carry the appropriate UL or cUL listing mark or label
• Aluminum flue with galvanized casing

Specifications