Balboa Water Group 54217-Z 50-54217-Z, one-Size. Includes topside control panel. Controls one dual-speed pump, blower or second one-speed pump, ozone and light. 18 x 16 x 14 inches. 4.0 out of 5 stars. #226,375 in Patio, Lawn & Garden. #4,853 in Pool & Spa Replacement Parts.