Diffuser Diffuser Type Diffuser Tube Air Flow Rate (Maximum) 15 scfm Air Flow Rate (Minimum) 3 scfm Active Surface Area 130 sq in Compatible Intake Pipe Size 3/4 in Minimum Depth Required 6 in Bubble Type Fine Bubble Size 1 to 5 mm Number of Air Tubing Rolls 0 Number of Compressors 1 Discharge Type Disc Active Membrane Diameter 2.5 in Active Membrane Material EPDM Air Tubing Diameter 3/4 in Compatible with Media Type Wastewater Oxygen Filtered Water Diffuser Frame Material PVC