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Water Filters Home > Whole House Water Filters > 20" Standard Whole House System


#20 Standard Whole House
Water Filter System

Uses 20" x 2.5" Filters
3/4" inlet/outlet

#20 Whole House Water Filter System from Ametek, Culligan, USFilter, and others
#20 Housing Product Manual
#20 Housing Installation Manual
(Download Adobe Reader)

Product Code: 20-ST

Quantity Discounts
1 Housings $55.99 each
2 - 7 Housings $49.99 each
8 + Housings $44.99 each

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20" Blue Replacement Sump

(Bottom half of housing)
Product Code: 20-ST-SB



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 20 Inch Filters
P5-20 Sediment Water Filter for the 20 inch Whole House Filter System S1-20 Sediment Water Filter for the 20 inch Whole House Filter System GAC-20 Drinking Water Filter for the 20 inch Whole House Filter System
P5-20 S1-20 GAC-20

Recommended Filters for the 20 Inch System
  • #20 Standard Whole House Water Filter:
  • #20 VIH Whole House Water Filter System 150166 ideal for residential, commercial, and industrial water filter applications
  • Valve-in-Head (VIH) patented technology allows for easy water filter cartridge replacement
  • Valve-in-Head involves a simple half-turn of the shut-off valve in the cap to shut off the water supply when changing a water filter. No need to purchase additional shut-off valves (saves $10)
  • Pressure Release Button for fast release of the whole house water filter pressure
  • Extends the life of washing machines, water heaters, and other household appliances
  • Leaking and clogging is prevented by the dynamically sealing, self-cleaning O-Ring
  • Thick walls for increased strength
  • #20 VIH Whole House Replacement Water Filters and Installation Information:
  • Easy to install 20" Valve-In-Head Whole House Water Filter System
  • 3/4" inlet/outlet for easy installation on 1/2" or 3/4" main cold water line
  • Water filter cartridge life depends on the water filter cartridge purchased and the water quality
  • Water filter cartridge not included
  • Sediment water filters reduce dirt, sand, silt, sediment, rust particles, and scale particles. Choose from one of our sediment water filters at the 20" x 2.5" Filter Page
  • Drinking water filters produce healthier, better-tasting drinking water. Choose from one of our carbon drinking water filters at the 20" x 2.5" Filter Page
  • Pentek #20 VIH Water Filter Housing:
  • Dimensions: 22-5/8" x 5-1/8" (575 mm x 130 mm)
  • Maximum Temperature:
    125°F (51.7°C)
  • Initial ∆P (psi) @ Flow Rate (gpm): 4 psi @ 8 gpm (0.3 bar @ 30 L/min)
  • Maximum Pressure: 125 psi (8.62 bar)
  • Pentek #20 VIH Housing Materials of Construction:
  • Housing: Polypropylene (Blue)
  • Cap: Reinforced Polypropylene
  • Valve Parts: Delrin
  • O-Ring: Buna-N