Honeywell FC100A1011 by Honeywell. (5-pack) $39 per filters. Buy in bulk and save when you purchase a 5-pack! FREE SHIPPING Exact Size: 19 15/16" x 19 3/4" x 4 3/8" (Rounded size: 20x20x5) Use this Honeywell FC100A1011 filter to replace: Honeywell FC100A1011, FC200E1011 Lennox... MSRP: Was: $215.00 Now: $195.00 Add to Cart