We are offering muffle furnace.Construction:horizontal rectangular body made of thick gauge galvanized sheets powder coated with ceramic fibrewool insulation. Heating elements: made from best quality kanthal al wire covered with ceramic blankets. Temperature range: upto 930c 1200c control accuracy: 1% of fsd temperature control: temperature control by electronic digital temperature controller. Size: size rating exterior dimensions9"x 4"x 4" 1500w 15" x 22" x 23"10" x 5" x 5" 2000w 16" x 23" x 24"12" x 6" x 6" 3500w 17" x 24" x 25"18"x 9"x 9" 6000w 20" x 27" x 29" also available in gmp (fully stainless steel 304 quality) model muffle furnace