4-Pack Filtrete 16"x25"x1" MERV 11 Allergen Defense Air Filter $23 at Amazon (opens in new tab)

10K+ bought in past month. Amazon has the 4-Pack Filtrete 16\"x25\"x1\" MERV 11 MPR 1000 Allergen Defense Air Filter for $25 - 5% off with Subscribe & Save (can cancel at any time) = $23 with free shipping on $35+ or with Prime. 6-Pack Filtrete 12\" x 24\" x 1\" MERV 5 Air Filter for $27 w/ S&S