Bag Vessel Filter Housing for the Pentek BPHE420-25 High Efficiency Filter Bag: 255024 BPHE-420-25 bag filter fits in bag vessel housing assemblies for 20" filter bags. Use the BPHE-420-25 with the Pentek PBH-420-1 1" inlet/outlet Bag Filter Vessel Water Filter System Use with the BPHE420-25 Pentek PBH-420-1.5 1.5" inlet / outlet Bag Filter Vessel Water Filter System . .Pentek BPHE420-25 Water Filter Specs: Dimensions: 4" Width x 18" Length (102 mm x 457 mm) Micron Rating: 25 Micron; 98% Efficient Maximum Temperature: 200F (93.3C) (bags only) Filter Media: Polypropylene microfibers with spun-bonded polypropylene covers Maximum Flow Rate: 35 gpm* *Maximum flow rates for filter bags are guides only and are dependent on variables such as fluid viscosity, temperature, amount and type of contaminants, type and size of filter bag and micron rating. The maximum rates (gpm water @ 68 deg. F) are normally only achieved under ideal conditions.