✓ WORKING AMBIENT TEMPERATURE RANGE OF 32 - 104 F ✓ MOVES AROUND UP TO 4000 CFM OF AIR ✓ EASILY PORTABLE SPACE BLOWER CANISTER THE GLOBAL INDUSTRIAL CONFINED SPACE BLOWER FANS PROVIDE EFFECTIVE VENTILATION TO MANHOLES CRAWL SPACES TANKS TRAILERS AND MUCH MORE. CONSTRUCTED OF ROTOMOLDED PLASTIC THIS INDUSTRIAL-GRADE VENTILATION FAN IS EVENLY LAYERED IN A SECOND SKIN THAT'S THICKER THAN INJECTION MOLDING AND PERMITS HIGHER LEVELS OF ENDURANCE DURING EXTREME TEMPERATURES AND ROUGH IMPACT. UV AND . THIS SINGLE SPEED VENT FAN IS LIGHTWEIGHT AND PORTABLE WITH AN EASY-CARRY HANDLE. RUBBER FEET ON BASE HELP MINIMIZE NOISE AND REDUCE VIBRATIONS. ETL & CETL LISTED. 1-YEAR LIMITED WARRANTY. INCLUDES 15' POWER CORD WITH 14AWG PLUG