The type B designation is assigned to gas venting systems that meet the safety requirements of Underwriters Laboratories, Inc. The AmeriVent all-metal, double-wall gas vent is listed as type B by UL and is approved for residential and commercial applications such as Category 1 water heaters, boilers, furnaces, space heaters, or wall heaters. UL-approved type B gas vent products form a continuous passageway from an approved gas appliance to the termination of the vent above the roof of the structure. The AmeriVent cap is the first engineered vent cap to gain recognition across the country for its performance. Millions of them are now installed on homes and business structures to protect against wind conditions that can cause waste gases to spill back into the structure through the appliance draft hood. The AmeriVent cap is UL-listed, and its patented design of ports and baffles keep rain and debris out of the vent. In addition, AmeriVent caps permit termination of vents at the minimum height necessary above the roof surface.

AmeriVent® Rain Cap, Series: ECW, 3 in, 0.022 in Aluminum, 6-3/4 in OD Dia, 5-5/16 in Height

• AmeriVent pipe are lightweight and rugged feature, made of corrosion-resistant galvanized steel and aluminum
• Ends have a snap-lock coupling
• 1 in minimum clearance to combustibles
• To disengage the locking tab - align the seams and pull apart
• Locking tab - to ensure a secure fit, push in the locking tab to lock the pipes together
• Engagement - snap-lock joints overlap - to calculate height deduct 1 in for each joint

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/AmeriVent_3ECW_Catalog.pdf
• Full Engineering Drawing https://assets.unilogcorp.com/267/ITEM/DOC/AmeriVent_3ECW_Full_Engineering_Drawing.pdf
• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/AmeriVent_3ECW_Instruction_Installation_Manual.pdf