Questions and Answers for Master Flow 4 in. Fresh Air Vent

A:  It is 30 gauge. If you have any other inquiries about our Master Flow products please email, warrantyllbp@gaf.com

A:  Constructed of galvanized steel, it is not aluminum.

A:  It’s galvanized sheet metal.

A:  Constructed of galvanized steel, it is not aluminum.

A:  You can seal the two holes if you are concerned about bringing in unwanted air or particles. If you have any other inquiries about our Master Flow products please email warrantyllbp@gaf.com or call Technical Services at 800-211-9612, Mon- Fri, 8 am 5 pm EST.

A:  Letting in fresh air into the home's air circulation system is a way of increasing the oxygen content of indoor air, thus improving the quality of the air you breathe.

A:  rockman413, The product you're referring to is actually an "exhaust vent" and primarily used to exhaust. So I'm not sure if can be, nor should be used as an intake. However, I can tell you I was impressed with the durability of the product. It's very well built and strong. As far as any cancer warning I have two uninstalled vents left and inspected them. There are are NO warning labels or markings on them. However, as an "exhaust vent" I'm not sure that would matter. Good luck.

A:  Slide this into the existing vent holes. It may need to be size adjusted to get it in. Then push in flush with the house siding and drill holes so there is no gaps. You do not need any additional screen as it has a screen included. Works great. We replaced all of our plastic vents that broke and deteriorated from the sun.

A:  You can use screws or nails to attach this to the siding. An addition screen is not needed. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  Great product

A:  The flange is 6.5" x 7.5".

A:  No

A:  The screen wire used is 1/4" and will deter most insects but not guaranteed deter all. Please call MasterFlow Technical Services at 800-211-9612, M-F 8A-5P EDT, for any additional questions.

A:  The finer the screen mesh, the less air will actually be able to pass through. You can compensate for this by selecting a larger diameter vent...or keep the smaller diameter (coarser mesh) and deal with the few bugs that possibly will make it through.

A:  NO.....