10” Inch Duct End Cap - Galvanized Steel Round Vent Cover for Outdoor and Indoor Use – Pipe Cover – Steel Plug for Dryer Ducts and Pipes – End Cap for HVAC Systems

I had a fireplace in my master bedroom in Las Vegas track home that I have abandoned and wanted to keep the wind noise from coming in and stop any bugs from entering. I stuffed a towel in the vent pipe then I pushed this end cap inside the tube, and it went in tight and firm. It is now completely sealed, and I can no longer hear any wind noise in my bedroom (See Pics) I have a track home, and the gas fireplaces have a tapered louver that goes into a 8” opening then the tapered louver narrows down to a 6” tube that goes up to the roof. I was so happy that this 8” end cap pushed inside my opening and the rubber seals made it tight and firm – would not have been any better = Perfect.

Easy to install, good quality used to block off 1 to many 6 inch ducts

Had a chimney port hole form a wood stove that was removed from the basement. Originally the cap was this large top-hat metal cover. This cap went on tight and snug in its place. Happy it’s there to keep out any outside critters. Very happy

Dont know who measured, made it, this thing fit perfectly beyond my expectations

Our house has a quirky setup, and for years, the laundry room was basically a graveyard for dryers. We lost count of how many we replaced or tried to fix. Add in the laundromat trips, and it was a whole saga. We finally got smart and switched to a ventless dryer—problem solved. Almost. Because then I noticed the gaping hole where the old vent hose used to be. Cue the horror-movie imagination: creatures crawling out while I’m folding towels, dramatic music playing, me screaming in slow motion. So I did some research, found this 4” galvanized steel duct end cap, and figured—why not? If it didn’t work, we’d return it. But it did work. It fit perfectly, sealed the hole, and banished my creepy laundry fears. Now I can do laundry without feeling like I’m in a haunted house. Simple, sturdy, and surprisingly satisfying. Highly recommend for anyone sealing off mysterious voids in their home.