Model LI84-M24 heats to 2,200°F and the lower draw chamber to 1,600°F with 23 KW power. The upper chamber hotface consist of low-heat-storage ceramic fiberboard for fast heat-up & cool-down.  Heat radiates from coil-wound heating elements mounted on ceramic rods which are completely external of the insulation and can be easily accessed for individual replacement. The lower draw chamber is insulated with 2 ½” insulating firebrick.  Both chambers are further insulated with cold face backup insulation.  The LI-8000 series lower draw chamber is equipped with a fan assembly and stainless-steel liner for recirculation and uniform temperature. Each chamber measures 12”H x 18”W x 24”L; chambers are  individually operated with separate digital controls and thermocouples. Standard equipment includes pre-mounted horizontal swing doors with microswitch for safety.