Fire Retardant Reticulated Filter Foam: RFR Series

Custom Foam Treatments, Inc. has created a premium quality Fire Retardant Reticulated Filter Foam available in sheets 48” wide by 118” long and custom cut sizes. This product meets the Underwriters Laboratories Inc. flame class of UL 94 HF-1 self-extinguishing flame safety standards. RFR filter foam also meets the new European RoHS standard which bans the use of lead, mercury, cadmium, Hexavalent chromium, PBBs and PBDEs.

Our RFR filter foam offers high dust arrestance and low air resistance when installed in electronics, computer, telecom, medical and general purpose equipment. This filter foam is available in standard sheets, die cut, laminated to other substrates, such as pressure sensitive adhesive, or other custom packaging designs.

Applications Include:

  • Air Filters
  • Liquid Filters
  • Speaker Grilles
  • And More

Offering high dust resistance and low air resistance, our fire retardant reticulated foam packs powerful protection, making it an ideal permanent filter option for:

  • Electronics
  • Computers
  • Appliances
  • HVAC Systems
  • Industrial Equipment
  • Manufacturing Equipment
  • Telecom Equipment
  • Medical Equipment


  • Color: Black/Natural
  • Density (approximate): 2 – 3.2 lbs/ft3
  • Tear Strength, minimum: 4.5 lbs/in
  • Cell Count: 10 – 100 ppi
  • Thickness Range: 0.15 – 1.0 inches
  • Base Materials: Polyether, Polyester
  • Tensile Strength, minimum: 22 psi
  • Elongation, minimum % to break: 200
  • Reticulation: Thermal (zapped)
  • Flammability Rating: UL 94 HF-1

About UL 94

UL 94 is a small scale standard vertical flame test. It is specifically for testing the flammability of plastic parts used in devices and appliances. It is not intended to reflect hazards presented by the material we described, or any other material, under actual fire conditions.

This information is furnished without warranty, representation, inducement, or license of any kind. This includes, but is not limited to the implied warranties of merchantability and fitness for a particular use or purpose, except that it is accurate to the best of Custom Foam Treatments, Inc.’s knowledge or obtained from sources believed by Custom Foam Treatments, Inc. to be accurate. Custom Foam Treatments, Inc. does not assume any legal responsibility for use or reliance upon the same. Customers are encouraged to conduct their own tests.

Choose from Polyether or Polyester Foam

Polyether UL 94 HF-1 Foam should be used when the filter will come in contact with liquid-based solutions.

Polyester UL 94 HF-1 Foam should be used when the filter will come into contact with gases.

Contact Us to Learn More About Our UL 94 HF-1 Fire Retardant Reticulated Filter Foam.