3M AL series filter housing is constructed of durable, cost effective cast iron and steel to create a quality-built vessel on the outside, designed to satisfy a wide variety of general purpose industrial and commercial filtration needs. On the inside, long lasting stainless steel internal components resist corrosion and help make cleaning and maintenance quick and easy. The 3M al series filter housing is designed to accommodate liquids at a maximum of 150 psi at 250 deg F in a wide range of sizes, from a 3 cartridge model to an 18 cartridge model. The al housing can be used in systems with flow rates up to 105 gpm (for water). The 3M al housing features a 3-piece design with cartridge center post construction. As process requirements evolve and grow and as floor plans change, you will appreciate the sensibility and convenience of our 3-piece design when you need to assemble, disassemble, clean and perform periodic maintenance. Our cartridge center post construction holds the filters in place and helps make cartridge change outs quick and easy. The cartridge posts are removable to help make cleaning and maintenance a time and cost saving endeavor. Applicable filter cartridges that can be used in the 3M al housing series include the following - Betapure AU series Filters, Betapure NT-T series Filters, Micro-Klean RB series Filters, Micro-Klean CS series filters and Micro-Klean RT series Filters.