80kW power is installed in Incoloy sheathed tubular heating elements. No. 809 features six inch insulated walls and aluminized steel interior/exterior construction. A 6000 CFM, 5 HP recirculating blower provides horizontal airflow across each side of the workspace.
A digital, microprocessor-based, thermocouple-actuated indicating temperature controller and fused disconnect switch are also included in this unit, which was entirely designed, engineered, built and fully tested by Grieve.