This Genuine OEM Lennox replacement filter (X6673) is the same as HCF20-10, HCF20-11 and fits model number Air Cleaner Cabinet HCC20-28. This MERV 11 filter has a nominal size of 20 x 25 x 5 and an actual size of 19 3/4 x 24 3/4 x 4 3/8.This filter is up to twenty times more effective than ordinary fiberglass filters. High efficiency filter media collects small dust particles before they can collect on your coils. No assembly required...no combs needed...filter just slides right in! This product is listed and rated by Underwriters Laboratories as U.L. Class 2.
- Nominal size 20" x 25" x 5"
- Actual size 19 3/4" x 24 3/4" x 4 3/8"
- Model X6673
- 98% efficient filtration media
- Recommended Replacement Every 3 Months
- Up to twenty times more effective than ordinary fiberglass filters No assembly required