Get current pricing for Ch, CH-29144-ID Ch - 798d, Blue M, Model #fr-251c-mp, 25x20x20, -18 To +93 Deg C240v, 1ph, 40 Amps, New Watlow #f-4 Microprocessor W/electronic Sensor, 3 Si . Product Category: Test/measurement, Sub Category: Environmental Chambers: