Dual Pro RS4 4 Bank Battery Charger w/2 Bank B.O.S. [RS4/BOS12V2] Brand_Meguiar's Sight glass fits the ARG-500-S

Sight glass fits the ARG-500-S 1/2" NPT strainer

Switch Face Width: (inch) 2-1/16"

Including check valve

3/4" Water Strainer - 50 Mesh Screen

Dual Pro RS4 4 Bank Battery Charger w/2 Bank B.O.S. [RS4/BOS12V2] Brand_Meguiar's Sight glass fits the ARG-500-SRS4 4 Bank Battery Charger with 2 Bank B. O. S. This kit includes Dual Pros B. O. S. Battery Optimization System 12V 2 Bank (PN: BOS12V2) and Dual Pros RealPRO Series Battery Charger 24A 4 Bank (PN: RS4). B. O. S. Battery Optimization System 12V 2 Bank B. O. S. actively shuttles energy between batteries to keep the pack balanced, increasing battery strength and longevity. Batteries in a pack will become out of balance and the pack is only as good as