Lennox 19L17 - 20" x 25" x 5" Healthy Climate HCF20-13 Air Filter, MERV 13

• Actual size: 19-3/4" x 24-3/4" x 4-3/8"
• MERV 13 media filter (MERV 13/CADR 520**)
• Removes up to 99% of particles such as dust, dirt, and mold spores down to 3 microns
• Replaces Lennox X6673 and Honeywell FC100A1037, FC200E1037
• Fits Lennox filter cabinet model X6661 / HCC20-28

**The Clean Air Delivery Rate (CADR) represents the cubic feet of clean air produced per minute

***One micron = 1/25,000 of an inch in diameter