Duct Connector Flange 4 inch by Wadoy, 4 Pack ABS Quality Air Conditioner Exhaust Hose Flange Wall Mount for Heating Cooling Ventilation HVAC System Dryer Vent Wall Plate

I use these flanges as a pair to pass a 6" air hose through a window. I took a sheet a plexiglass and cut a 6" hole in it, then sized the plexiglass to fit the window width and the height I wanted. I screwed the flanges onto the plexiglass flange to flange and then wedged it into the open window, closing the window on the plexiglass for a snug fit. Then I attached the ducting to the flanges and I was done. This allowed me to vent th smoke and fumes from a laser engraver out of the garage. It also saved me from having to damage a window in doing this. Worked well.

Product arrived packaged well. It was important to my purpose for this item that they were in pristine condition, and I was very satisfied when my delivery arrived. Product shipped quickly, arrived on time. No unattractive manufacturing seams or flaws at all. Perfect for my intended use!!

This item is exactly as described, a 6-inch diameter black plastic flange for a PVC pipe. I am not using this item for plumbing, but for Car Audio. The item is fitted at the end of a 6-inch diameter PVC pipe for a vented subwoofer enclosure. The flange is flush with the end of the pipe (port) and will cover the cut-out hole in the wood and carpet for a finished look. This item worked perfectly for my intended application. The plastic is thick enough to be rugged and durable, but not too thick as to impede on the opening diameter.

adapts to my project as anticipated

I used them in pairs with both flanges on the attic-side for a solder fumes exhaust at my workbench, so duct clamped on both sides and no ceiling material exposed to flow.

Good for giving a finished look for your hole – your duct hole. I cut some wood (instead of sheetrock) that goes around the duct but even though it's a pretty good cut, it still could look a bit more finished. That's where these come into play. It makes it looks clean.

Secures well to wall and makes a clean look

Important thing was the dryer hose fit without issue.