Dual EMI Air Filters

Superior shielding and filtration performance

The new Dual EMI Honeycomb air filter provides superior shielding against electromagnetic interference and is specially designed for electronics, telecom and datacom, and military electronics equipment.

Dual EMI Air Filter performs three distinct functions:

  1. EMI/RFI shielding with positive grounding.
  2. Air straightening for maximum cooling efficiency.
  3. High dust arrestance with low pressure drop.

The Universal Dual Honeycomb air filter reduces EMI/RFI noise by using a honeycomb structure which provides “cells” that are designed to deflect and absorb EMI noise. The honeycomb pattern maintains minimal airflow impedance, and provides a “straightening” effect for even air distribution.  In addition, an EMI shielding gasket is installed around the frame perimeter. The gasket ensures full conductivity of the frame to the equipment.  Moreover, the filter is available with a an EMI shielding stainless steel mesh for further EMI/RFI attenuation.

The Dual Honeycomb air filter also offers these benefits:

  • Performance specifications that meet the requirements of CE, Telcordia NEBS and UL.
  • Flame-retardant, open-cell polyurethane foam filter media for high dust arrestance.
  • Removable, cleanable and reusable.
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Dual EMI Air Filter | More Information

Dual EMI Honeycomb air filters are ideal for telecom, medical, power gen, military/defense, and many other industrial and commercial products.  The Dual EMI filters are designed for electronics, telecom or datacom equipment where EMI/RFI interference could result in equipment malfunction. Filters are designed to be cleanable and reusable as needed. Dual Honeycomb air filters are custom designed for each application.   Order an  air filter prototype for your application today.

Dual EMI Air Filters | Performance Information

Quadrafoam

Quadrafoam Models: FF-2X, FF-3, FF-5, FF-5X, FF-1025-B
Size Initial Resistance*
(Pascals)		 Average Synthetic
Dust Weight Arrestance(%)
10 PPI 0.01 (2,49) 38
25 PPI 0.05 (12,44) 66
45 PPI 0.07 (17,41) 80
60 PPI 0.12 (29,84) 82

*inches water gauge

Tests performed according to ASHRAE Standard 52.1 -1992 at 300 feet per minute (1,53 m/s) face velocity.

Quadrafoam II

Quadrafoam II Models: FF-2X, FF-3, FF-5, FF-5X, FF-1025-B
Size Initial Resistance*
(Pascals)		 Average Synthetic
Dust Weight Arrestance(%)
10 PPI 0.01 (2,49) 38
30 PPI 0.05 (12,44) 66
45 PPI 0.07 (17,41) 80

*in inches water gauge

Tests performed according to ASHRAE Standard 52.1 -1992 at 300 feet per minute (1,53 m/s) face velocity.

Uni-Foam

Unifoam Models: FF-2X, FF-3, FF-5, FF-5X, FF-1025-B
Size Initial Resistance*
(Pascals)		 Average Synthetic
Dust Weight Arrestance(%)
10 PPI 0.01 (2,49) 38
25 PPI 0.03 (7,46) 63
45 PPI 0.07 (17,41) 80
60 PPI 0.12 (29,84) 82

*in inches water gauge

Tests performed according to ASHRAE Standard 52.1 -1992 at 300 feet per minute (1,53 m/s) face velocity.