... .551350DST18450150015000653500.751680DST20500200015000653500.751940DST24600280018000653500.752480DST28700320027000805001.12950DST328004200360001007501.54090DST369005300450001007501.54960DST4010006500550001007502.26250DST44110078006800015010002.28500DST48120093007500015010002.29600 DST12 automatic self backwashing water filter