317659-405 MFG #: 317659-405
Out of Stock
  • Availability: Available for Delivery
  • Category: Replacement Filter Media
  • Warehouse Availability: CRNE
  • MERV Rating: 8
  • Size: 21.5" x 23.5"
  • Thickness: 1"
  • Refresh Carrier Documents: Done
  • Refresh Carrier Images: Done
  • Sx.e Stocking Unit: Each
  • Sx.e Vendor: Parts
Purolator’s SERVA-PAK is an extended surface, high capacity air filter composed of individual dust holding pockets assembled in a metal support frame. A special multi-row stitching process performed on layers of ultrafine glass bonded to a non-woven backing produces uniform spacing between each pocket and provides optimum media performance while extending filter life. Each pocket is bonded and sealed to its own J-channel support frame, which is mechanically fastened to a heavy duty, corrosion-resistant, galvanized enclosure frame. This design creates a rigid, air tight construction with a minimum of 85% open face area.


  • The variety of SERVA-PAK filter sizes and efficiency options allows you to match the proper filter with virtually any application. With many depth and capacity combinations to choose from, most system conditions, including limited fan static, high concentration of contaminants, and limited filter bank face area, can be accommodated.
  • Features

    • High density glass microfibers.
    • Classified per UL Standard 900.
    • Up To MERV 14 Performance.
    • Corrosion-Resistant Galvanized Header.
    • Rigid Internal Support.