Specifications include, but are not limited to: Each portable toilet supplied under this contract shall be a complete self-contained chemical toilet in a fiberglass or polyvinyl shelter. Each unit shall rest on skids with the ability to be supported firmly in place on leveled spot with provisions for securing the unit by its transport skids. All structural members of the toilet, such as roof, walls, floor, door and tank components shall be contained in the shelter assembly. The door shall have the ability to be locked when occupied. Venting for the holding tank and wall mounts for toilet paper dispensing shall be an integral part of the unit. The shelter shall be constructed of reinforced fiberglass or polyvinyl. The seat shall be ABS plastic. All seams shall be caulked and otherwise sealed to prevent weather damage or leakage.