Thomas Small Benchtop Muffle Furnace, 129 cubic inch Capacity, 5" Width x 4-1/4" Height x 6" Depth, 1100 degree C Quick heat up to 1100 deegree C maximum Digital single set point control Chamber capacities of 129 cubic inch Small benchtop muffle furnaces feature ceramic fiber insulation that provides fast heat up while lowing energy use Chamber measures 5" width by 4-1/4" height by 6" depth