Double walled, inner S.S.304 grade & outer S. Steel or MS duly Epoxy Powder coated / finish, gap filled with Glass wool insulation. Inner full length viewing glass / plexi door or viewing window on outer metallic door provided. Leak proof positive Locking arrangement for door. Chamber illuminated with bulb. Temp. Range Ambient + 50C to 600C. Humidity Range Ambient to 90-95% RH. Accuracy - Temp + 2Â°C or better RH + 5% or better Cooling by Hermetically sealed ISI marked compressor coupled with air cooled condensing unit fitted with Motor, fan blade, Electrical Accessories etc.. Mounted on bottom of unit on heavy base frame. Humidity Created with Steam & Injected into working chamber. Heating with three sided element of wire. Temperature and Humidity is controlled by Digital/ Analog controller.