Keystone Filter has taken a GIANT® step in the development of a high capacity, high flow filter. These housings are available in a wide selection of materials including Keystone’s EXCLUSIVE CLEAR styrene models.GIANT® filter housings offer the following:

• Available with Keystone’s EXCLUSIVE 10" and 20" clear styrene acrylonitrile (SAN) bowl or our 10" and 20" blue talc reinforced polypropylene bowl.
  
• Both 1-1/2" and 1" NPT connections are included in every GIANT® filter head. (Also available with British pipe threads.)
  
• Head and sump threads incorporate Keystone’s EXCLUSIVE positive stop feature to prevent overtightening.
  
• O-ring is securely retained in groove at top of bowl so that it stays in place even during cartridge replacement.
  
• Available from stock with or without pressure relief vent button.
  
• Custom colors available by special order.
  
• Mounting bosses in head for available bracket.
  
• Accepts industry standard cartridge size: 4-1/2" O.D. x 1" I.D. x 9-3/4" (full length), and 20" (double length).
  
• Full testing to industry standards of the Water Quality Association for burst pressure, water tightness and fatigue resistance.
  
• FDA grade material for potable water