Walk-In OvenNo. 907 is an electrically heated inert atmosphere walk-in oven used for heat treating graphite tooling molds. This oven has a maximum operating temperature of 1000°F and workspace dimensions of 48 inches wide x 84 inches deep x 72 inches high. 100 kW total are installed in Incoloy-sheathed tubular heating elements while a 7,800-CFM, 5-HP recirculating blower provides combination airflow to the workloads. The oven features 8-inch-thick walls comprising 2 inches of 1900°F block and 6 inches of 10 lb./cf-density rockwool insulation.