The VU4 4-Corner Valve and VU2 2-Corner Valve Units are engineered to provide the cleanest installation and most reliable operation on the market. The VU4 electronic solenoid valve unit inflates and deflates up to (4) individual Air Springs and has 1/4” NPT ports for use with any fittings that you choose for all of its plumbing connections. The VU2 electronic solenoid valve unit inflates and deflates up to (2) individual Air Springs and has 1/4″ NPT ports for use with any fittings that you choose. The robust internal solenoid valve architecture maximizes flow rates, provides bubble-tight sealing, and guarantees operation up to 200 psi for millions of cycles. All of this technology is housed in a unique enclosure design which routes each of the solenoid wires to a single weatherproof connector, eliminating typically loose wires. This not only improves the appearance, but it also guarantees proper operation for every installation. With an overall size of only 5″x 3″x 3″ with the VU4 and 3.08″x 2.75″x2.75″ with the VU2 and the ability to survive harsh under vehicle environments, this product is ideal for any application.