Thick 3/4" flooring holds big payloads solidly. Full-length piano hinges and keyed locks give you a security trump card. Sidewalls up to 8' tall are sized right for a man and his tools. And those optional aluminum tread plates thresholds? They're almost indestructible. Add heavy-duty metal ramps - movable, which saves a ton of trouble - and you're ready to get things done.