I recently just heard of attaching a MERV13 filter to a box fan. It would make sense that the 5 filter box design would potentially make the filters last longer, but I wonder if it’s actually more effective at filtering the air than a single filter attached to the back of the fan.
I recently just heard of attaching a MERV13 filter to a box fan. It would make sense that the 5 filter box design would potentially make the filters last longer, but I wonder if it’s actually more effective at filtering the air than a single filter attached to the back of the fan.