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Capable of capturing particles invisible to the naked eye, HEPA (High Efficiency Particulate Air) Cartridge Filter meets industry standards for HEPA air filtration by providing filtration of 0.3 microns @ minimum of 99.97% efficiency.  Ideal for working with allergens, powders, and superfine particles. Cloth Pre-Filter Bag provides extra stage of filtration extending cartridge filter life. Fits all Guardair 55, 30, and 20 Gallon Drum Vacuums and Vacuum Generating Heads. 

  • Filtration Media: Melt-blown polyester
  • Efficiency Rating: 0.3 microns @ minimum 99.97% efficiency
  • Galvanized carbon steel cage
  • PVC end seal
  • Carbon steel end cap
  • Napped cotton flannel pre-filter bag with elastic neck
  • (1) HEPA Cartridge Filter
  • (1) Cloth Pre-filter Bag
Part NumberDimensions
(L" x W" x H")
Weight (lbs)
Part Number N635H Dimensions
(L" x W" x H")
12.2 x 10.5 x 10.5
Weight (lbs) 4.0