DC 250 CFM Flangemount 4" BlowersFeatures: Tough Reinforced Plastic Housing Mount 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 Regulation 183.410 and ISO 8846 MARINE for Ignition Protection Complies with Complies with ISO 9097 MARINE 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: 24v Box Dimensions: 8"H x 11"W x 12"L WT: 5.6 lbs UPC: 671880030182 Owner&';s Manual (pdf)