AmeriVent 4ECW Double Wall Universal Gas Vent Cap,, 4

Highlights:

• Size: 4
• For use as a ventilation cap as well as type B vent termination
• AmeriVent caps permit termination of vents at the minimum height necessary above the roof surface
• Protects against waste gases spilling back into the structure through the appliances draft hood
• The AmeriVent cap is UL-listed. and its patented design of ports and baffles keep rain and debris out of the vent