and two 50' suspension ropes and the float

3 acres 6 to 9 feet deep

3/8" airline is sold separately and can be found in the related products tab on this page

the greater the area of coverage with this system

High-flow ball bearing cooling fan

Kasco Bottom Screen For Surface Aerators Beneficial Pond Bacteria and two 50' suspension ropesIt's stongly suggested to use this screen in ponds that have debris of any kind as it will protect the motor from clogging and possible damage. This optional Kasco Bottom Screen fits all of the currently listed, High Oxygen Transfer Surface Aerators, including the Kasco 2400AF, 3400AF, 4400AF, 8400AF, 3. 1AF, 5. 1AF models. Please be sure to note in the comment box on the checkout page which AF unit you are using it with so we can fit the screen