Guardian 3000 electronics-cooling pump measures about 3.54 in. long x 1.42 in. diam, well suited for use in small computers and other electronics. The overhung centrifugal, non-metallic, seal-less pump is powered by an brushless 12-v dc motor and designed for a minimum of 5 years of maintenance-free operation. Flowserve Corp., Dallas, TX• Length - 90 mm (3.54 in) • Diameter - 36 mm (1.42 in) • Impeller diameter - 4.24 m (13.9 ft)