The Liquatec SPF Series Polyester Pleated filter cartridges outperform other "depth" type filter elements (wound, spun, melt blown, resin bonded) because the pleated media creates more surface area for increased dirt holding capacity.  The 100% polyester filter media creates additional savings with extended filter life, since cartridges 5 micron and up are cleanable.
Specifications:

• Polyester media is chemical and bacteria resistant
  
• Cleanable (reusable) on cartridges 5 microns and up
  
• Pleated media has more surface area providing:
  
• Greater dirt holding capacity
  
• Lower pressure drop
  
• Extended filter life
  
• Pleated media has a polypropylene core for added strength
  
• Vinyl plastisol ends fuse components together into a unified end cap and gasket