FilterBuy 16x25x5 Lennox X0583, X6670, HCF16-10 Box Replacement Pleated AC Furnace Air Filters - Pack of 2 - MERV 8 (AFB Silver). Manufactured by FilterBuy in the USA. FilterBuy 16x25x5 Lennox X0583, X6670, HCF16-10 Box Replacement Pleated AC Furnace Air Filters - Pack of 2 - MERV 8 (AFB Silver). Nominal size 16x25x5. Actual size 15 7/8 x 24 3/4 x 4 3/8. Manufactured by AFB in the USA, using 100% USA components Perfect for standard residential / commercial use. Standard MERV 8 replacement filter. AirFilterBuy: Breathe Better!