Model No. 976 is a 500°F (~260°C) electrically heated jumbo walk-in oven from Grieve, currently used for heating moulds at its customer’s facility.

Grieve Corporation
Grieve presents jumbo walk-in oven 976
Workspace of this unit measures 13’W x 28’D x 7’6”H. 360KW are installed in Incoloy sheathed tubular elements to heat the oven, while 49,000CFM from two 20HP recirculating blowers provide a combination airflow to the workload.
This Grieve jumbo walk-in oven features 4-inch thick insulated walls, removable top-mounted heat chamber, aluminised steel interior and exterior, door seals eliminated and doors equipped with drag seals, plus the unit was constructed to split into four sections for shipment to the customer’s location.
Oven controls on No. 976 include a 13,500CFM powered forced exhauster (shown in the left foreground of the attached photo) and other safety equipment required to handle up to two gallons of flammable solvent at 370ºF (~188ºC). Also on-board are a digital programming temperature controller, SCR power controller and motorised dampers on the intake and exhaust for accelerated cooling and rapid purging.
This Grieve jumbo walk-in was built to NEMA 12/NFPA 79 electrical standards.