Products
Cube and Pocket Filters Overview
Duo-Cap
Medium Efficiency Extended Surface Cartridge Filters
  • MERV 8 performance rating (ASHRAE Test Standard 52.2-2007)
  • Superior dust holding capacity
  • Extended filter lifecycles
  • Low initial pressure drop
Duo-Cube Series
Extended Surface Synthetic Media Air Filters
  • Koch Duo-Cube filters are medium efficiency, extended surface filters
  • Constructed of 100% synthetic fibers to meet the requirements found in various air handling systems
  • Duo-Cubes are offered in four media types: 1 Ply, 2 Ply, 3 Ply and 4 Ply
  • All four are engineered to provide an excellent combination of efficiency and extended filter life cycles
  • Available in Standard style (without an internal wire frame, for use in existing cube-type baskets without modification to equipment) and in Self-Seal style (with an internal wire frame designed to fit standard holding frames without clips or fasteners, and eliminate air bypass)
Duo-Pak 40
Extended Surface Self-Seal Two Pocket Filter
2 Ply Configuration
  • Depth-loading characteristics of 550 media offers high dust holding capacity and efficiency
  • Progressive density design of the 550 media is enhanced with a specially formulated tackifier to prevent particle migration and provide exceptional efficiency above five microns

1 Ply Configuration
  • Utilizes a tackified single density polyester media, offering an economical alternative for applications where high dust holding capacity in a primary filter is required
  • Self-sealing feature prevents air bypass and eliminates the need for clips; saving time and money during change-outs
Multi-45
Filter Cartridges for Conoflo™, Cono-45™, Conopac-45™
  • MERV 10 efficiency
  • Superior dust holding capacity
  • Collapsible design means reduced shipping and storage costs
  • Fits existing wire-basket framework without modification
Multi-Test Cartridge
Original Equipment Replacement Cartridge
  • Multi-Test Filters are collapsible replacement cartridges
  • Available in four nominal efficiency ranges: 20-30%, 45-55%, and 80-90%
Multi-Test Rigid
Extended Surface Replacement Filter
  • Extended surface replacement filter for Farr HP