Toll Firing PTCR Rings Kiln Furniture Thermocouples High Alumina Fibers and Boards Bubble Alumina Brick and Insulating Firebrick Ceramic Fiber Blanket & Boards Silicon Carbide Labware Toll Firing We maintain a variety of kilns to provide toll firing mainly for research applications. Our kilns available include the following: Nabertherm N150 ; 1280C, 150 liter capacity. Approximately 14″ wide x 20″ deep x 20″H. Nabertherm HT450 ; 1750C, 450 liter capacity with air preheat system. Approximately 19″ wide x 31″H x 45″ deep. 1700C lab furnace. 1600C Elevator Furnace. 18″ x 18″ x 22″H setting area. Deltech 1650C TH363630 – Top hat 36″ x 36″ setting area x 30″H. Depending on your firing needs, we also have other kilns available that could be set up for toll firing.