Type B

Precision Vent Quality Seal

B-Vent, Type ‘B’ Gas


  • Tested and listed to UL441 ‘Standard for Gas Vents’.
  • B-Vent can be used with Listed Category I equipment, gas-burning appliances equipped with a draft hood, or equipment listed for use with Type B gas vent.
  • Sizing and system routing must conform to the ANSI Z223.1 and National Fuel Gas Code (NFPA 54). Detailed calculations and system assembly drawings must be submitted for approval.
  • Aluminum inner liner, ¼” or ½” air space, and galvanized outer jacket.

We stock up to 24″ diameter, including hard-to-get items such as flue collar connectors, adjustable slip sections, firestops, supports, wall brackets, and double wall flexible connectors & segments. Diameters up to 48″ are available. Orders placed by 2:00 PM EST for stock items will ship the same day. PV provides detailed sizing and system assembly drawings conforming to ANSI Z223.1 and NFPA 54

Most products are in stock for same day shipment when you order by 2:00pm EST!