The Maxim 3000 portable restroom from Satellite Industries has ultra-smooth walls, a sleek appearance and a spacious interior. With no ledges to collect dust, debris or waste, it stays clean longer, and the rounded interior creates additional room, with the contoured tank providing a more comfortable sitting position. Two powerful springs hold the door shut, preventing unwanted dirt from blowing in. It is fully blow-molded, producing a durable two-ply, cross-ribbed wall panel and a double-walled roof made to withstand the weight of heavy snow and ice. Blow molding also eliminates about half the parts found on a typical restroom, reducing repair costs and parts inventory. It also has heavy-duty, vandal-proof door springs, full corner handgrips and cascading, molded-in wall vents. 800/328-3332; www.satelliteindustries.com.