Koch Filter manufactures a complete line of Koch-brand replacement filters for residential and commercial air filtration systems. Each type is offered in two efficiency ranges, MERV 8, 11 and 13 and in all popular sizes.

Multi-Pleat Series AB
Replacement filters for Trion Airbear and Air Cub

Multi-Pleat Series HW
Replacement filters for Honeywell F-series.

Multi-Pleat Series SG
Replacement filters for Aprilaire Space-Gard media.