The Rock Line Products Airtow Trailer models of drop-deck trailers are designed to address many loading, safety and cargo protection concerns. Built with a heavy duty but lightweight enclosure that's made with galvanized Z-bars, sturdy siding and heavy duty, cam-lock doors, the enclosed Airtow trailer serves as a mobile vault for equipment or cargo. The extra wide 3/16" steel deck remains level as it raises and lowers hydraulically in less than 15 seconds. Loading all types of equipment becomes a safe one-man job in any weather condition since difficult tilt beds or dangerous loading ramps are eliminated.