Flow Right filter boxes are ready-to-assemble filter cabinets that are compatible with 1- and 2-inch air filters.

If you're using your HVAC system to clean your home's air, it only does so when the unit is running. You can learn more about filter rating systems from LAist here. All you need is a box fan ...

Even if you don’t need your central air conditioning for cooling ... you’ll need to have a pro install a larger filter box to accommodate a thicker size. Mary H.J. Farrell As a senior editor ...

This includes homemade air purifying devices made from a box fan and a HVAC particulate air filter, he said. Montrose said these homemade purifying boxes are highly effective and cost-effective ...

An HVAC air filter will catch much of the smoke in ... you’ll need to have a pro install a larger filter box to accommodate a thicker size.