Item # CG20, Giant Filter Housing - Double Size/Clear Bowl w/Pressure Relief Button(Fits 4 1/2 x 20 cartridges)

Giant filter housings offer the following unique features:
-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 is stays in place even during cartridge replacement.
-Custom colors available by special order.
- Mounting bosses in head for available bracket.
-Full testing to industry standards of the Water Quality Association for burst pressure, water tightness and fatigue resistance.
-FDA grade material for potable water.