Balancing filter efficiency with energy efficiency and fresh air circulation is a tradeoff.

Leakage of 12,824 CFM was causing multiple problems which sealing the leaks solved.

The loose wire and puddle on the floor don’t know – or care – about your mask or vaccine.

Main point: Controlling air leakage is good for controlling disease spread as well as for energy savings.

Hinge kits and roof protection are good for your fan, safety, and of course your roof