Measures 4" x 7-1/2" x 5-1/2". Includes pump, motor valves, reservoir and cover. Strength to lower and hold in place even largest tab. Two solenoid valves lock tightly preventing water pressure from retracting the tabs. Lexan cover protects electro-hydraulic unit from occasional wash down and translucent fiberglass reservoir allows fluid check at a glance. Installs easily with sturdy mounting bracket.