Cartridge, 30sqft, 1-15/16"ot, 1-15/16"ob, 5-7/8", 10-1/2"L, 3oz : PWK30

Cartridge, 30sqft, 1-15/16"ot, 1-15/16"ob, 5-7/8", 10-1/2"L, 3oz Application: Hot Spring Spas (Watkins), Watkins Mfg/Hot Spring Spas Bottom Physical Dimension: 1-15/16" Bottom Style: Open Diameter: 5-7/8" Length: 10-1/2" Media Type: 3oz Model: Classic, Models after 1990Square Footage: 30 sq ftTop Physical Dimension: 1-15/16"Top Style: Open Replaces 13004,13004ECO,17-175-1757,1755-MB,31489,46200,4902-111,645544039156,645544139153,73178,969601,AK-5005,C-6330,C-6430,FC-3915,FC-3915-HB,FC-3915M,P-6430,PC-3915,PLE-051-9186,PLE-051-9187,PLE-051-9670,PWK30,PWK30-3,PWK30-M,PWK30-MB,PWK60-MB,SC712,UNIC6430