The PondScape Aeration System with Locking Steel Cabinet is the powerhouse of a complete aeration setup. Available in 1/4 HP, 1/2 HP, 3/4 HP, and 1 HP rocking piston sizes. The lockable steel cabinet secures equipment while providing robust protection and easy access for maintenance. What's Included: Rocking piston air compressor Manifold with valved outlets Pressure gauge and relief valve Integrated cooling fan Pre-wired electrical connections 6-foot power cord (120V 60Hz, standard 3-prong plug) Lockable steel cabinet enclosure with keys System Sizing: 1/4 HP: 2 outlets, runs 1–2 diffusers 1/2 HP: 3 outlets, runs 2–3 diffusers 3/4 HP: 4 outlets, runs 3–4 diffusers 1 HP: 6 outlets, runs 5–6 diffusers Installation: Connect to GFCI-protected outlet. Sinking/weighted tubing and air diffusers sold separately. THIS PRODUCT SHIPS OVERSIZED AND DOES NOT QUALIFY FOR FREE SHIPPING