EasyPro PA50 Rotary Vane Aeration Systems1 4 hp Stratus RV33 Rotary Vane compressor Two valve manifold with pressure relief Choice of: 200' of 1 2" Quick Sink tubing, 200' 1 2" poly tubing OR no tubing Choice of: Two QS2 Quick Sink self weighted dual head air diffusers OR no diffusers for custom system Approximately 2. 2 cfm of air flow per diffuser Typical operation cost of $1. 31 per 24 hours at . 09 per kWh, actual cost may vary 115 V or 230 V Options Drop Ships from the manufacturer