Built to last; the Maxim 3000 is a top of the range portable toilet unit. It's easy to clean and will take plenty of knocking about. Its one drawback is that it is a little difficult to manhandle. Satellite's marketing says "The smooth interior and exterior walls make for easy cleaning of dirt and grime. Unique, vandal-proof, heavy duty springs are recessed in the top and bottom of door to give it extra wind resistance and assure a smooth, tight fit".