Used for machine-shop heat treating, the electrically heated, universal style oven has a maximum temperature capability of 850ºF (454ºC). No. 979 has workspace dimensions measuring 36” wide x 36” deep x 36” high in each of the two compartments. Controls include a digital indicating temperature controller for each compartment, recirculating blower airflow safety switches, 10” diameter circular chart recorder for each compartment to record part temperature and manual reset excess temperature controllers with separate contactors. The oven also has 6” insulated walls, double doors and three roller shelves rated for 200 lb.