The purpose of a kitchen exhaust grease filter is:

  • Particle Filtration: To reduce the amount of grease and oil in the exhaust duct.
  • Fire Safety: To prevent flames from entering the duct.

The most commonly used metal grease filters within the Australian Market are:

  • Aluminium honeycomb filters
  • Stainless steel honeycomb filters
  • Stainless steel baffle filters

Grease particles can be broken down into three size categories:

  • Particle Type Particle Size
  • Smoke Particles 0.03 to 0.5 Microns
  • Grease Steam Particles (Grease with moisture particles) 0.5 to 6.0 Microns
  • Grease Spatter (Larger visible particles) 6.0 to 150 Microns

Different filter designs work better for different particle size ranges, and not all devices can capture all particle sizes effectively.