The UltraLav III portable restroom trailer targets larger gatherings with its three restrooms and extra large 460 gallon holding tank (1300+ flushes). This mobile restroom is perfect for weddings, golf outings, corporate functions and other upscale special events; even the most discriminating guest will find the accommodations “up-to-par.”

The UltraLav III is engineered to be easy to transport, easy to set up, easy to use and best of all… easy to maintain. Our unique modular approach to portable restroom design makes the UltraLav series the most owner-friendly restroom trailer on the market. Almost every component is easily accessible and replaceable including: the surface mounted plumbing, sink/countertop, fixtures, flooring and even the one-piece ceiling. Simply call Wells Cargo and ask for the UltraLav customer service. Our quick turnaround means you’re never out of service for long!


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Interior Specs

  • Lockable Base Cabinet (Most Units)
  • Solid Surface Countertop & Sink
  • Self-Closing Sink faucet
  • Soap Dispenser
  • Shatter Proof Mirror
  • Ceramic China Pedal Flush Toilet
  • Toilet Paper Holder
  • Paper Towel Dispenser
  • Waste Basket
  • Sanitary Supply Receptacle (Women’s Restroom Module Only)
  • Auto Flush Ceramic China Urinal (Men’s Restroom Module Only)
  • Smooth, Mar Resistant Laminated Interior Walls
  • 1-Piece, Non-Skid Rubber Floor
  • 1-Piece Ceiling With Built In Air Supply & Air Return
  • Wall Mounted Thermostat

Exterior Specs.

  • Fold-Down ATP Steps With Aluminum Railings
  • LED Porch Light & Occupancy Indicator Light
  • 3” Quick Connect Waste Tank Access Valve
  • Waste Tank Level Indicator (Sight Glass)
  • Fresh Water Hook-Up
  • 120v/20 AMP Motor-Base Receptacle
  • Roof Mounted Low Profile A/C with Heat Strip


  • Fresh Water System (105 gal.)
  • Stereo
  • Mirror Frames
  • Water Heater
  • Roof Vents
  • Interior Color Options
  • Crane Lifting Points
  • Full Winterization Package

Floor Plans