Operating at temperatures up to 850°F, the Grieve No. 902 electric walk-in oven has three 60- x 72-in. rollout steel shelves rated for 400-lb. loads. and 8-in. thick oven walls comprised of 2 in. of 1,900°F block and 6 in. of 10 lb./cf density rockwool insulation. The oven’s doors are equipped with expansion joints on the inner face to ensure uniform sealing at all operating temperatures. The oven includes a digital programming and recording temperature controller, manual reset temperature controller with separate contactors, recirculating blower airflow safety switch and SCR power controller.