• UL Listed to UL Standard UL1738, ULC–S636-08.
• Vent sections are constructed of an inner wall and outer wall with insulation in between - inner vent is Single Wall 444 Stainless Steel and outer shell is 430 stainless steel
• Inner vent diameters range from 5" to 16"
• Suitable for interior or exterior installation
• Suitable for use with gaseous fuels venting appliances rated category II, III, and IV
• Model 2V Type BH available for Negative & Positive Pressure Industrial or Commercial Appliances up to 50 w.c.
• Rated for continuous operation at 550 degrees F in United States
• Rated for continuous operation at 473 degrees F in Canada