The Abatement Technologies H051 is the OEM replacement filter for the Abatement CAP50. The H051 is the 16 x 25 x 1 MERV 4 replacement pre-filter for your system.
Maintenance & Care: Abatement recommends you change the H101 1st stage filter every 1 to 3 months.
Filter Dimensions: 15 1/2 x 24 3/8 x 1.
This package ships with 12 filters.