It bends around corners and withstands temperatures from −20 to 150° F. Sold in standard lengths of 25 or 50-ft. with interior diameters of 3 or 4-in., the hose can be ordered in custom-lengths, colors, and diameters from 1¼ to 4-in. Cuffed ends, screw-on end fittings, and wire pitch and wall thicknesses are available.

Hi-Tech Duravent, 400 E. Main St., Georgetown, MA 01833, (864) 297-2201,