Give your pond a breath of fresh air and add a statement piece to your landscaping! The 20 ft Windmill System is Outdoor Water System's most popular windmill. Featuring BalCam II technology that significantly increases air production.

Aeration is critical to the health of your pond， providing essential oxygen to fish， reducing pond muck and odor， and decreasing mosquito breeding. This unit provides 3.0 to 4.5 CFM air output at 30 psi with a single diaphragm， pumping life giving oxygen to ponds up to 30 feet deep! The 20 ft. tower height produces more wind due to the higher elevation than shorter windmills.

Made in the USA， this windmill is backed with a 5 year warranty on the compressor， bearings and cams - the longest in the industry!

Windmill Aerator Features:

• 73" blade diameter - the largest on the market!
• Redesigned blades and front dome assembly produce improved air flow
• High quality 18 gauge stainless steel construction
• No electricity required
• Each unit aerates ponds up to 3 acres， can combine multiple units
• Windmill can be placed up to 1000 feet from pond
• Fan still turns at low wind speeds due (3-5 MPH) to high torque windmill head
• Pumps up to 4.5 CFM of air
• Stainless steel bearing components with BalCam II technology
• Self-governing head provides automatic overspeed protection in high winds
• Assembly is fast and easy

System Includes:

• 20ft 3-leg tower
• Windmill Aeration system
• Air Stone Diffuser and Foot Valve
• 100 Ft of 1/2" regular air line to handle the increased air output
• Secure locking mechanism connecting the windmill head to the shaft