AmeriVent 4ECW Double Wall Universal Gas Vent Cap,, 4" Dead Bolts Our patented

Our patented

Best for full sun to medium shade (4 to 8 hours of sun per day)

Hook and loop flap closure

Plastic construction for durability

Outside dimensions : 35" L x 18" W x 18"D

AmeriVent 4ECW Double Wall Universal Gas Vent Cap,, 4" Dead Bolts Our patentedHighlights: 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