Heavy Duty Flexmount BlowerAC 250 CFM Flexmount Continuous Duty 4" BlowerFlexmount Blowers are built to the same high specification as the Heavy Duty Flangemount Blowers for use as air intake or extraction systems in engine rooms, fuel compartments, galleys or heads. Extended Life Induction Motor Tough Reinforced Thermoset Plastic Housing Continuous duty motor with thermal overload protection Flexmount universal bracket permits outlet to face any direction Slip-On Inlet Ducting Connection Efficient High Volume Air Flow Low-Current Draw Corrosion-Resistant Materials Throughout 5,000 hr motor life for teh heaviest of applications. WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov. Specifications: Ducting: 4" Open Flow (CFM): 250 CFM Volts: 115v Box Dimensions: 11"H x 11"W x 14"L WT: 9.4 lbs UPC: 671880525954 Owner&';s Manual (pdf)