MICRO SHIELD® ZERO-BYPASS™ 4V-Cell Mini Pleat Filter

Columbus Industries’ catalog of filtration products is performance-engineered to meet the HVAC market’s ever-evolving filtration needs. CI’s dedicated Research and Development team works tirelessly to develop the innovative, best-in-class products that our customers depend on.

As filtration efficiency demands grow, CI’s Micro Shield mini-pleated filters offer peak efficiency and dust-holding capacity with minimal air resistance. As a result, Micro Shield products provide high-efficiency filtration while creating substantial energy and cost savings

CI’s Performance-Engineered Micro Shield Mini Pleat Filters Just Got Better!

Our latest innovation — ZERO-BYPASS™ — combines our Best In Class mini-pleated media with patented built-in gasket technology.This innovative combination creates a long-lasting, low pressure drop filtration system that virtually eliminates filter bypass with the inclusion of the ZERO-BYPASS™ permanent gasket system. Available in MERV 16/15A, 15/14A, and 14/13A these exceptional filters offer unparalleled filtration performance while providing energy, time, and labor savings.


  • Patented, permanent gasket system
  • Positive mechanical seal eliminates air bypass
  • Superior energy savings compared to other high-efficiency products
  • Low initial resistance
  • Lightweight
  • Hassle free installation without additional filter hardware
  • Fully incinerable


  • Commercial Buildings
  • Industrial Facilities
  • Pharmaceutical
  • Government Institutions
  • Universities/Schools
  • Hotels and Entertainment Complexes

Technical Information

  • MERV 16/15A — ΔP=.20”w.g. at 1968 cfm
  • MERV 15/14A — ΔP=.21”w.g. at 1968 cfm
  • MERV 14/13A — ΔP=.16”w.g. at 1968 cfm
  • Available in a variety of standard sizes
  • Tested in accordance with ASHRAE Test Standard 52.2-2017 appendix J
  • UL Standard 900 approved
  • 100% synthetic media


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