Just installed a new Bryant Evolution system but there wasn't enough space to fit the air purifier(Aprilaire 5000). I am now left with a return grill about 3 feet away from the air handler that can handle a 1" filter (18x36).
What would be the best filter to fit this grill that won't give an excessive pressure drop in a home with severe allergy sufferers. My wife won't permit a free standing filter because of appearance. I change the filter about every 3 months. Thanks.