Unused 500 GPM vertical 0.5-micron Cartridge filter. Manufactured by Houston Design Products. Pall Model #VV012HF6S30AF1B-100915. 316L stainless steel construction. Rated 125 PSIG/FV @ 300°F. Top pressure-lock quick-opening closure, dished bottom head and skirt supports. Clean differential pressure 2 PSI, dirty differential pressure 15 PSI. 99"OAH x 22"ID. Estimated weight of 5,000 lbs. Serial #1609-2. National Board #856. Tag #18-FD-1802B. Built in 2023. Previously designated as Truck Rack #16 Raw Tallow Filter.