Grieve’s No. 953 electrically heated 500°F universal oven measures 36 × 36 × 48 and features 9 kw in Nichrome wire heating elements, while a 600 cfm, ½-hp recirculating blower provides horizontal front-to-rear airflow. The oven is made of aluminized steel with 4-inch insulated walls, a Type 430 stainless steel interior and an integral leg stand. Safety equipment includes explosion-venting door hardware, a powered forced exhauster with airflow safety switch and a purge timer. A digital indicating temperature controller and a recirculating blower airflow safety switch also are included.