Unused 154 gpm 316L stainless steel cartridge filter. Manufactured by Houston Process & Design. 15" diameter x 120" height. Carbon steel shell with 316L stainless steel internals, dished quick-opening top and leg supports. Rated 210 PSIG/FV @ 160°F. Serial #1665-4. National Board #836. Tag #18-FD-1807. Built in 2023. Previously designated as Unit A RD Diesel Filter.