【Air Vent Size】：The air vent cover inner diameter is 85 mm/3.3 inch, outer diameter is 96 mm/3.8 inch, height of cylinder is 45 mm /1.8 inch; 100mm / 4 inch flat air Vent ventilation grille ...

How to determine whether you need better attic ventilation. In the summer, good attic ventilation reduces heat buildu ...

Improving your home’s attic ventilation can make a big difference in the health of your home. Without proper ventilation, a sealed attic traps excessive heat and moisture, which can lead to mold ...

I am reroofing the house and have a question about roof venting. Most houses in the neighborhood have ridge vents on all their ridges. Some have electric vent fans, and one house has a fan powered ...