Great Lakes Shrink Wrap Heat Tunnel. Model: HSV3/F387. Maximum aperture/clearance above belt: 28 in. W x 15 in. H. Conveyor belt dimensions: 6 ft. 10 in. L x 2 ft. 4 in. W. U.S. Electrical Motor, 15 hp, 1740 rpm, 200-230/460 V, 6.7-6.5/3.26 amps, 60 Hz, 3 phase. Variable Speed Drive, ratio: 20.6, rpm out: 84 (final). Dayton Electric Fan Motor, 1/3 hp, 1725 rpm, 208-230/440 V, 1.5-1.4/.7 amps, 60 Hz, 3 phase. Conveyor infeed height: 3 ft. 3-1/2 in. Conveyor exit height: 3 ft. 6 in. H. Overall dimensions: 7 ft. L x 4 ft. 2 in. W x 7 ft. 1 in. H. (GM).