Flangemount Blower DC 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 [https://productimageserver.com/prop65/6pt.png]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 [http://P65Warnings.ca.gov].