Diffuser System Diffuser Type Diffuser System Air Flow Rate (Maximum) 9.6 cfm Air Flow Rate (Minimum) 158 scfm Active Surface Area 452 sq ft Minimum Depth Required 8 ft Bubble Type Fine Bubble Size 3 to 5 mm Number of Air Tubing Rolls 0 Number of Compressors 2 Cabinet Depth 20 in Cabinet Height 20 in Cabinet Width 18 in Compatible with Media Type Freshwater Compressor Mount Material Powder Coated Aluminum Compressor Mount Type Large Cabinet Diffuser Frame Material Stainless Steel