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

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 gasket technology originally developed by 3M.

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 52.2-2007
    and 52.2-2017 appendix J
  • UL Standard 900 approved
  • 100% synthetic media


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