20” in-line Big Blue type set: Big Blue type filter housing, with blue sump and pressure relief valve, tested and certified by NSF and WRAS, mounting bracket with screws, wrench, pressure gauge, bacteriostatic filter centralizing ring.

20” in-line set Big Blue type: Big Blue type filter housing, with blue sump and pressure relief valve, tested and certified by NSF and WRAS, mounting bracket with screws, wrench, pressure gauge, bacteriostatic filter centralizing ring, instruction and color box. Available with brass inserts: 1" BSP. Head is equipped with pressure relief valve which enables release of air accumulated after cartridge replacement.