The Abatement Technologies F621 replacement pre-filter filter is for the following Abatement units:
CAP600, CAP600-UV, CAP600-UVP, CAP1200, CAP1200-UVP
The actual size of the Abatement Technologies 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!
Abatement Technologies recommends you change the 1st stage filter every 1 to 3 months under normal operating conditions
This package ships with 12 filters.