600 gph media filter system; fourth layer, filter sand; size: number 20 mesh, 0.85 mm; uniformity: 1.40 max; specific gravity greater than 2.5; bulk density: 130 pounds per foot
Classification: Sands of all kinds, natural, whether or not colored, other than silica, quartz, or metal-bearing sands of chapter 26
NSN 7035-01-026-0117
NSN 4140-01-088-6981
NSN 5950-00-643-4023
NSN 6645-01-358-1474
NSN 5996-00-683-0674
NSN 6105-01-106-6355
NSN 5950-00-805-8389
NSN 6650-00-272-2271
NSN 6645-01-578-7959
NSN 5855-01-180-5369
NSN 4140-01-634-0330
NSN 6220-01-103-2502