- CASE OF (2) - PROTECH PD540042 - Replacement Merv 8 Media Filters for Exact Fit XHF Series Media Air Cleaners, 21" X 21" X 5"
- Nominal Size: 21" x 21" x 5" / Actual Size: 20-3/4 x 20-3/4 x 4-3/8 , Rated Air Flow - 1800 CFM
- Fits Model *XHF-E21 Media Air Cleaner Housing
- Replaces the following filter models: PD540012 , 540012S , 540012 , 1404399746448
- Custom-sized Merv 8 media filters for replacement of exact fit series media air cleaners