Hon&Guan Duct Connector Flange 6 Inch, Plastic 6 Inch Dust Collection Fittings Dryer Vent Connector Flange For Heating Cooling Ventilation System, Black.

A portable air conditioner needs venting to the outside for heat transfer. The window hardware that came with my unit was cheaply made and broke. So I had too use a little "redneck engineering" to make it happen. Thus flange is EXACTLY what I needed to feed the vent duct through it. Once installed, I sealed it up for a weatherproof fit. In case you're wondering, the nylon stocking I used as a bug shield expands when the A/C is running. I know it looks funny, but that's what redneck engineering is all about -- makeshift designs that work but look stupid.

I am using this to move warm air from a wood stove in the basement to in-floor air registers left over from a previous heating system. I built a baffle for each duct mounted in the basement ceiling above the stove and attached a 6-inch fan to one side of the baffle and one of these connectors to the back. The other end of the duct connects to the rigid duct that goes to the floor register. Once in place i get a nice steady flow of warm air into the living space on the main floor. This connector plus a 6-8-inch ring clamp cleanly attaches the flexible duct. It's a little fiddly to get on, more about how the duct is made than the connector. Stretch out the duct and it slides right over the connector, tighten the clamp and it stays in place.

To help hook up to my wall

Worked well.

Not even close to 6” label even shows it should be 6”. Quality seems to be good. Not worth the time to return.