Compact muffle furnaces with dual shell furnace housing of rust-free stainless steel and heating elements encased in quartz glass tubes. Tmax 1100 °C; working temperature 1050 °C. Heating from two sides from heating elements in quartz glass tubes. Maintenance-friendly replacement of heating elements and insulation. Insulation only made of materials that are classified as not carcinogenic acc. to TRGS 905; class 1 or 2. Housing made of sheets of textured stainless steel. Dual shell housing for low external temperatures and high stability. Flap door which can also be used as a work platform. Exhaust air outlet in rear wall. Compact dimensions and light weight. Controller mounted under the door to save space. Equipped with the R 7 controller as standard with adjustable holding time. Standard power supply 230 V 1 / N / PE 50/60 Hz.