Purolator HVAC Air Filters: 25x25x1 Hi-E 40 Pleated
Site had a good description of different filter types, although it took some research to find and compare. Prices were quite fair, better than some competition, and product is good quality and American made--a big plus! Filling the order was delayed, probably by COVID delays. Shipping was prompt and reliable, with tracking and notification. One of 12 filters in box was damaged, the sender promptly responded to my complaint with a promise to refund the amount for the damaged item.