Atlas Filtri BIG BLUE 20" Water Filter Housing - 1"Ports INSTALLATION & USE RA1800712 - DP BIG 20The BIG BLUE 20" Filter Housing is designed to house any of the 20" BIG SX filter cartridges. Suitable for a wide range of heavy-duty water filtration solutions.Brand new range of housings designed to fit to "BIG" filter cartridges with outer diameter (OD) from 4" to 4.50", inner diameter (ID) 1.10", height at 10" and 20" with standard SX (DOE) configuration.With female IN/OUT connections at 1" or 1 1/2" with BSP plastic threads DP BIG housings are suitable for every domestic Point-of-Entry (POE) or every industrial application when heavy duty performance is a must.Plastic BSP Threads. *INCLUDES THE ATLAS DP BIG SPANNER - FOR OPENING AND CLOSING THE FILTER HOUSING* CONSTRUCTION Non-toxic materials, suitable for drinking waterHead: reinforced polypropyleneBlue Bowl: reinforced polypropyleneO-Ring: EPDMBreather-valve: body polypropylene, o-ring EPDMPorts: 1" BSP Female APPLICATION LIMIT