Check the listing for details. Pro-Clear Aire™ Aeration Compressor. Condition: New. Listed at 305.99 USD. Additional InformationPond Size4000 - 30,000 gallonsMax. Depth8 feetMax. Watt50Air Flow @ 0' Water Depth2.8 CFMAir Flow @ 2' Water Depth2.5 CFMAir Flow @ 4' Water Depth2.2 CFMAir Flow @ 6' Water Depth2.0 CFMAir Flow @ 8' Water Depth1.4 CFMAir Flow @ 10' Water Depth0.6 CFMShip Weight16 lbsHave Questions? We have answers! Use the "Contact Seller" link above! Why Buy from Us? At Graystone Creations we promise you the following: Fair and Honest Pricing Dedicated customer support before, during, and after the sale Quick and professional shipment of your order SHIPPING - Most items ship the same or next day. Occasionally orders will take longer depending upon the item or which warehouse it will need to ship from. Thank you for your interest and we look forward to assisting you further. Graystone Creations