The Model SRI6P-2 B O D incubator is thermoelectric cooled eliminating the need for a refrigeration compressor The incubators include a mechanical convection system to ensure even air distribution digital temperature set controller over temperature limit control and a temperature display Two 75 pound capacity shelves are included A one amp interior outlet allows the use of shakers stirrers roller bottles or BODTrak apparatus Low Temperature Incubators are ideal for testing sewage and wastewater as well as other low room temperature applications 220VExterior dimensions 30 x 31 5 x 33 5 in (76 2 x 80 01 x 85 09 cm)