These lockable cabinets are a real deal! We challenge you to find a cabinet this well built for less money! Originally designed to hide and protect air compressors in our aeration systems. Over the years these cabinets have been adapted for many different uses. Cabinets are constructed from 14 gauge galvanized steel with a light green, baked powder paint finish that is far superior to ordinary paint.Each cabinet has knockouts for up to five airlines and one knockout for an incoming electric line. The cooling fan provides air flow over the motor which results in cooler operating temperatures and extended motor life.