This package ships with 12 filters at price listed above.
The F621 “FiberTrap” filter is the OEM replacement 1st stage 1" throwaway MERV 4pre-filter for Abatement Technologies, Inc.’s model PRED600, PRED1200,PRED1200E, PRED1200-UV, PAS600, PAS1200 and H600V portable air scrubbers. The actual size of the F621 air filter is approximately 15 1/2" x 16" x 1".
The FiberTrap pre-filter is designed to capture the coarsest particles circulating through your air duct system which helps to extend the life of the 2nd stage carbon-pleated filter and the HEPA filter, saving you money!
Dimensions (inches):16 x 16 x 1