VICO/BALBOA 48 Frame size wet end has 4 case bolts. NOTE: 3/4, 1, and 1.5 HP versions have 1.5 inch pump unions, 2 HP and up have 2 inch unions for intake and discharge. two horizontal barbs are factory sealed shut, but can be opened (drilled out) for some heat recovery replacement options. Includes all shown in pic, ready to bolt on. Choose your HP in drop down. Manufacturer numbers: 1215156, 1215116, 1215121, 1215132, 1215145, 1215161.