Grease Baffle Filters: Stainless Steel Baffle Filters

Grease filters are designed to remove grease and particulates from exhaust air streams. The most common grease removal filters currently in use are the baffle-type. Permatron’s metal grease baffle filters are available in three models. Our metal grease filters are made of galvanized steel, aluminum or stainless steel.

How Do Metal Grease Filters Capture Grease?

Our baffle grease filters are 2″ thick and contain two layers of roll formed baffles which are equally spaced to maximize grease removal. The spacing built into the filter creates an optimized air flow which helps the filters capture grease inside the filter. Grease then drains down the baffles and into a collecting trough. Permatron metal grease filters are designed to prevent flames from passing through the filter baffles. They are constructed from different materials to withstand different temperature levels. Read additional information on Grease Filters as published in the 2014 NAFA Guide

Constructed from different materials to withstand different temperature levels, Permatron metal baffle filters are available in:

  • Model GFG constructed of galvanized steel for a maximum temperature 450 degrees F; Classified by UL (grease) NFPA std. 96.
  • Model GFA constructed of aluminum for a maximum temperature 250 degrees F.
  • Model GFS constructed of 304 stainless steel for a maximum temperature of 900 degrees F; also available in 430 stainless steel.


  • You really put the “Service” in Customer Service.  So many people would have just said no. I appreciate your taking that extra step by referring me to Reilly Foam. Permatron customers are lucky to have you in their corner. Thanks for all the help.

    Judy HandfieldTotal Refrigeration Gaskets
  • The distributor you got me in contact with sent me the three PreVent Model R filters I was looking for. They are working great. Thank You.

    Robert M. CoutureSeaman Paper Company of Massachusetts, 3rd Class Steam Engineer
  • Everything was correct & professionally served, finely crafted with accurate dimensions of quality material. I will purchase further metal mesh filters from your firm in the future as demand calls for.

    Steven Sutherland HVAC Contractor, South Carolina
  • We had to change a combined condensing / free cooling coil because it was so badly damaged from debris and washing. 10k€ (approx. $12,000 USD)  for the coil and works and 6k€ (approx. $7000 USD) for the crane hire. The second chiller on the site is perfect as the screen was fitted back some time ago.

  • The filters we purchased are a great addition to our plant operations.  I am looking at other applications for their use…  

    Ben StevensValero Renewable Fuels, Maintenance Manager
  • The order process went very well.  We received the black washable fan bonnets 2 weeks ago and are very happy.  I will order again in the future.   Great product and great service.  Thank You!

    Geoff DawesFestival Foods, Maintenance Tech. II
  • It’s always a great idea to protect HVAC condenser coils with screening, especially if you can do it right after new equipment installation. Once the magnets where inserted into the screen grommets, it took literally less than a minute to place the screening on the equipment, adjust it, done. This screening will protect the condenser coils from grass cutting, bugs, cottonwood seedlings, etc.

    Jim PodrazaArgonne National Laboratory - Planning Manager
  • The guys love them!  Clean look, and easy to clean….  

    Dave GaborekHyatt Regency Ohare, Chief Engineer
  • Our customer, Logoplaste, uses and raves about the Prevent BHA Screens and MagnaMount Kits.We did an install at their manufacturing facility in June on two units, all four sides required screens. Installation time was drastically reduced from the original 6 hour estimate with standard mount clips, to complete screen installation in under 1 hour with MagnaMount clips.The facility is located along the river where cottonwood trees are very abundant. Even when installing PreVent, it was catching the cottonwood that was flying. I brought him out one of your cleaning brooms a week after install, and the Maintenance Manager said that it is the best money he has spent since he has worked at that facility. He is planning on purchasing some more for his 4 Cooling Towers as well.    

    Sonja HyderRamAir, Sales and Service
  • The PreVent bonnet style filter is the best thing I have ever bought to protect our cooling tower circular fan. We have to clean it every two weeks but it is so easy.

    Martyn RogersCotek Papers Limited, Maintenance Manager

Permatron metal grease baffles are designed to collect and drain grease into a trough, and prevent flame pass through.