DESCRIPTION The 4 Corner Solenoid Unit inflates and deflates 4 individual air bags under the pressure of 0~230psi for millions of cycles. The unit has the robust internal solenoid valve layout maximize the flow rate and provide the bubble tight sealing. All of the 8 valves is housed in a enclosure which routes each of the valve wires to a single weatherproof connector, it is easy to install eliminating so many wires connection. This not only improves the appearance around the solenoid, but it also ensure the proper operation for every installation. The manifold using two 1/4" NPT ports to intake the compressed air and two 1/4" NPT ports to exhaust the air. Four 1/4" NPT ports connect the air lines to four air bags and the four 1/8" NPT ports connect to the air gauge or pressure sensor or simply plugged if you don't want to connect anything. Mounting Hardware Dimensions: 6-½" W x 2-5/8" H x 3-1/8" D Specification Power Source: 9.5 - 16 Volts Max Air Pressure:230 PSI Inlet ports: two 1/4 inch NPT Female ports(If you only want to one inlet port, you can plug another port) Exhaust Ports: two 1/4 inch NPT Female ports Air Bag ports: Four 1/4 inch NPT Female ports Air Gauge Ports: Four 1/8 inch NPT Female ports(If you don't want to connect the air gauge, you can plug these ports)