Ametek Rotron Regenerative Blower. Model: DR 353M. Maximum flow: 106 scfm. Maximum pressure: 1.66 psi. Maximum vacuum: 3.16 in. Hg. Cast aluminum blower housing, impeller and cover with cast iron threaded flanges. EG&G Motor, 3/4 hp, 230/460 V, 2.5/1.25 amps, 60 Hz, 3 phase. Inlets/outlets: (2) 1-1/2 in. dia. NPT (male). Overall dimensions: 17 in. L x 11 in. W x 33-1/2 in. H.