Get current pricing for Ch, CH-29120-ID Ch - 537h, Tenney, Model #btr, 20x20x22, -70 To +170 Deg C, 230v, 1ph, Watlow #f-4 Control W/rs-232, 2 Side Port, 94 High/low Limit, Electroni . Product Category: Test/measurement, Sub Category: Environmental Chambers: