trolleys and hoists, with capacities less than 27 metric ton 30 ton 27,000 kg 60,000 pounds, CMAA 74 Class A, B, C, or D, suitable for indoor or outdoor use in general purpose service, ordnance handling service, or hazardous area environments. Use SECTION 41 22 23.19 MONORAIL HOISTS (manual, electric, or air-powered).