BNX manufactures the highest grade 16x25x1 air filters and does so in the United States. Available in MERV 13, MERV 11, and MERV 8
https://trufilter.com/products/bnx-trufilter-16x25x1-merv-13-pleated-air-filter-made-in-usa-6-pack
Lesley Webb
Lesley Webb