PRM PVC Multi-Cartridge Filter Housing, 1-1/2 Inch Inlet/Outlet - 58 PSI Max Pressure: Amazon.com: Industrial & Scientific
Multi-Cartridge Stainless Steel Filter Housings SSC - Pure Aqua, Inc.
Parker - 1 Inch Pipe, FNPT End Connections, 20 Inch Long Cartridge, 23-1/8 Inch Long, Cartridge Filter Housing with Pressure Relief - 37039203 - MSC Industrial Supply
Multi-Cartridges Plastic Filter Housings - Pure Aqua