4.5 X 20 Whole House Water Filter - Transparent with Cartridge and Mounting Bracket PWFHT4520BT - 1 Inch NPT - by Kem Flow
Heavy Duty Whole House Water Filter with 1 inch inlet  / outlet NPT (required cartridge 4.5 inch x 20 inch) (Transparent housing with steel mounting kit & 4.5 inch x 20 inch - 5 micron dirt / sediment cartridge)  This is rated as "best" because it possesses a transparent sump which provides visibility of the cartridge condition. Also this model comes with a steel mounting kit and an 4.5 inch x 20 inch - 5 micron dirt / sediment cartridge.  This filter housing is manufactured from the highest quality NSF listed, FDA grade materials. A built-in pressure relief button and a spanner wrench are included for easy periodic cartridge change out. Please note replacement o-ring is model PWFRG357.  Specifications:        for use with industry standard size cartridge 4.5 inch O.D. x 20 inch       flow rate 40 GPM       temperature range 40-100 degrees F       pressure range 20-100 psi       7 1/4 inch (W) x 24 inch (H)