21x21x5 Filters

What Our Customers Have to Say

Alfred S. 1 day ago
5
I have not used my filters yet, since I just put a new one in my furnace that I already had in stock. However, I do like the reasonable price and that they did not take that long to arrive. I will be better able to give a review in a few months.
William M. 1 day ago
5
Needed filters for my air purifier for the main ac unit. Easy to find,price right ,and good quality. Received quickly, looked and fit like the original filter. Will be buying all my filters from here.
customer 2 days ago
5
Finding the right size filter was easy to do and the ordering, easy as well. The turn around time was quick. I followed up with ordering filters for my hot tub. Best prices in town!
Michael H. 2 days ago
5
Excellent product with fast service.