AMERICAN METAL 3ECW Ducting-Components

They only carry the Amerivent universal cap at Home Depot. That one costs half as much, but is just a friction fit into the b vent pipe. I worried that it would work itself loose. I bought this one so that it can lock into the b vent.

Much better than a generic cap. Clicks into place and wont be blown off in wind.Dont forget to clean off any grease with some alcohol or mineral spirits and then spray paint so it stays rust free.

Tornado ripped cap off hot water heater vent tube and this fit perfectly and with a nice snug fitting.

My new gas hot water heater's pilot kept going out. There seemed to be a correlation between out and windy days. Installed this cap and no more problems.

Good quality, be sure to screw it in place in windy areas

Good for wind conditions pilot light stays on

Overall good product. But I paid extra for expedited delivery and the delivery was delayed.