Glass: Use a standard glass cleaner with a lint free applicator. Metal Hardware: Use a clean dry cloth to remove dust and build up of lubricant. Lubricate bearings as needed. Wood Interior: Use a standard wood cleaner such as Murphy's Oil Soap with a lint free applicator. Aluminum Trim: Use a damp cloth for normal soiling. Saturate cloth with soapy water for more difficult stains. Rear of Unit: Follow recommended instruction particular to material at rear of unit.