ADO Products UDV2248 Durovent 22" x 48" Rafter Vent

This is the best price that I have found for this product anywhere. In my case I have a second story room above my garage with a semi-vaulted ceiling. I needed to vent from the soffit air holes to the small attic space above the flat part of the room's ceiling. These air vents are fast to put up. Just hold them in place and staple. Overlap each one about 1/2 inch. I only needed two between each truss on each side of the roof to reach from the soffit to the attic air space. The other morning it was cold and there was frost on my newly insulated roof. I could see that the vents were ducting air to the ridge vent as every other truss had frost.

I ordered thinking I was getting a package with 70 pieces and it had 10. Tried to return it and return shipping not covered and it costs $170 to send back. If I could give negative stars I would

A little brittle. Have to be very cautious when stapling them or they break.

I have a 1.5 story house so half one side is mostly roof. The unfinished eves are big but got pretty hot from the roof. Simply stapling in these alone made a huge difference (installed them to the roof line which has a ridge vent). I left one half of the eves bare for a couple of days and the difference was huge. Now with insulation and drywall it's totally night and day. Update: it's now June and often ninety outside. My gym room is noticeably cooler thanks to these; initially I built it with just insulation between the drywall and roof. It was quite a lot of work to retro-fit these but worth it.

The Durovent is doing wonders for my attic which previously had insulation bats covering the soffit vents on my eaves. I can tell already that the attic temp is MUCH lower on sunny days and the ceiling at the eaves no longer feels colder in the winter than the rest of the ceiling do to proper air flow in my attic! The only part that you will dislike is installing the stuff, especially if you have a low pitched roof like I do! That said it is a snap to install, these fit perfectly between my 24" center rafters.

only 1 batt came in the box. ridiculous. they are only $1.00 each at hardware store. Complete rip off!!

Item was received, but about 1/4 of the box were damaged, would not buy from again. BEWARE !!

Easy to install. does the job.