Features low pressure drop with maximum moisture and acid retention. Hermetically sealed cans prevent exposure to dirt and moisture. Complete with gaskets to interchange with other manufacturers' models. 48 cu.-in. cores can be used in most 4 3/4" O.D. flanged shells. 1 3/4" I.D., 3 3/4" O.D., 5 1/2" length. Higher moisture and acid capacity for systems with excessive moisture due to leaks or ruptures. Requires (2).  May be replaced with  RO17130.