Yes my sister in law purchased a storm… Yes my sister in law purchased a storm shelter from Smith and Yeager in meridian ms.they install a aura gravity roof vent and no one can breathe inside of the shelter.they came back to check it but found no problem with the air circulation..My question is are these vent made for underground storm shelters.She only had it about 2 week now..

Nice Design Purchased 18 vents for the attics of our townhome complex. We chose these since they claim to be tested to 200 MPH winds since we live on the east coast. However, we have some leaks, which appear to be due to the installation. The roofers did not look up the instructions online, and just used a roofing nail in each corner. It appears they need to go back and add screws like the instructions show. If this fixes the problem, I'll upgrade the review grade.

Thanks to incredible graphics Thanks to incredible graphics, your web view is just as true. And for your services, that's not much better, but I'll appreciate your swift reaction to time.

Service was excellent and vents came in… Service was excellent and vents came in as promised. They are exactly what was needed. Haven't connected vents to them so I'll see what the sheet metal contractor says. The powdercoat has a high sheen which makes the vents reflect sunlight at certain angles. It would be better if a flat or satin finish were offered.

after 13-15 years they still perform like it was day one i bought of pair of Active Vent retrofits -- 13-15 Years ago (!) to replace those useless turbine spinners -- i noticed brown spots on my ceiling - surprised to discover they were letting in rain and they were in good shape and spun fairly fast. i just took out the spinners - fit these retrofits in - they fit just right - fastened the standing vent pipe with some galvanized screws - easy peasy. Fast forward to 2019 - they still look great although the label has faded from being exposed to the sun - They do not let the rain in - and i live in the NYC area which saw back to back hurricanes - Irene in 2011 and the devastating Hurricane Sandy 2012. These retrofit vents will prob out last me.