Flangemount BlowerDC 250 CFM Flangemount 4" Blower Tough Reinforced Plastic Housing Mounts to any flat surface Slip-on Inlet Ducting Connection Efficient High Volume Air Flow Low-Current Draw Corrosion-Resistant Materials Throughout N.M.M.A Type Accepted Meets USCG Regulations 183.410 and ISO 8846 MARINE for ignition protection Complies with ISO 9097 MARINE VARIATIONS 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: 12v Box Dimensions: 8"H x 11"W x 12"L WT: 5.7 lbs UPC: 671880030175 Owner&';s Manual (pdf)