Vent Systems 150 mm / 6" Inch Air Vent Duct Connector Flange - Plastic Ventilation Pipe - Ducting Connector for Round Flexible or Straight Pipes, Cooling Heating Ventilation System HVAC

I used these to provide a connection for my airbrush paint booth flexible extractor hoses. They are a standard 100mm and will take the aforementioned airbrush extractor pipes as well as standard tumble dryer hose. They work well.

ok

Yes

Did the job just fine!

Good price

This simple non-return air vent does it's job reasonably well. When it arrived I saw it would be very noisy and clatter a lot in the wind. I modified it by making an adjustable weight arm that holds it shut better than it otherwise would. I've also put a little bit of lithium grease around the inner join to help stop it bouncing when closeing under gravity.Even with these modifications, I still hear it opening and slamming shut on blustery days. It's a lot less annoying after modification than it could have been mind!It's not exactly obvious which way around it's supposed to work. Would be nice to include a simple arrow showing which way to fit it. Not too tricky to work out by experiment of course.

Not very tough and easily broken