Can be operated horizontally or vertically. Heating elements are embedded in ceramic fiber insulation to provide rapid heat up and cool down. Chamber is supplied with two interchangeable end pieces to accommodate tubes of 1" and 2" diameter. Chamber length is 12 inches. Overall: 16H x 14.625 x 12. 110V, 50/60Hz, 1250W. 36120-01 has a microprocessor control, single set point with digital set and digital temperature readout. 36120-02 has manual control which maintains set temperature to ±2% of full scale reading; dual scale pyrometer readout.