Flangemount BlowerDC 250 CFM Flangemount 4″ BlowerTough Reinforced Plastic HousingMounts to any flat surfaceSlip-on Inlet Ducting ConnectionEfficient High Volume Air FlowLow-Current DrawCorrosion-Resistant Materials ThroughoutN.M.M.A Type AcceptedMeets USCG Regulations 183.410 and ISO 8846 MARINE for ignition protectionComplies with ISO 9097 MARINE VARIATIONSWARNING: 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 CFMVolts: 12vBox Dimensions: 8″H x 10″W x 12″L WT: 5.7 lbsUPC: 671880030175Owner’s Manual (pdf)