Honeywell 16x25x4 Furnace Filter Model # FC200E1029 MERV 13. Actual Size 15 15/16" x 24 7/8" x 4 3/8" Package of 2. Part #1856-3 Actual Size 21 1/2" x

Actual Size 21 1/2" x 21 1/2" x 3/4"

Lennox Replacement Filter Part # X6675 MERV 16

Included:  MHX3C Manual-Control Duct Mount Humidistat

Compatible with Aprilaire Models 2200 and 2250 (This is the aftermarket option for the Aprilaire 201)

We highly recommend disconnecting the electrical power to the Air Cleaner using a qualified Technician

Honeywell 16x25x4 Furnace Filter Model # FC200E1029 MERV 13. Actual Size 15 15/16" x 24 7/8" x 4 3/8" Package of 2. Part #1856-3 Actual Size 21 1/2" xGenuine Honeywell 16 x 25 x 4 3 8" Replacement Filter Part # FC200E1029 Actual Exact Size 15 15 16" x 24 7 8" x 4 3 8" MERV 13 Rated Fits 16 x 25 Air Cleaners and Old 16 x 25 Honeywell Electronic Air Cleaners Package of 2