Restroom Calculator

Need an estimate for how many porta potties your event needs? Use this handy calculator! For a more specific quote tailored to your needs, call us today at 800-210-8407!

special events calculator
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Onyx Ultima Restroom Trailer



Height11 feet 6 in.
Length32 feet
Depth8 feet 6 in.
Holding Capacity950 gal.

Simply the Best in Luxury

On Site Companies is proud to offer the Onyx Ultima Deluxe Luxury Bathroom Trailer. This restroom trailer is lavishly equipped and decorated to provide you and your guests with all of the comforts of a traditional stationary restroom. Each of our Onyx Ultima Restroom Trailers comes equipped with separate male and female restrooms, porcelain flushing toilets, individually separated bathroom stalls, fresh water china sinks, oak cabinets, skylights, air conditioning and heating, simulated wood flooring and stereo system. The size and design of this beautiful bathroom trailer make it perfect for weddings, special events, large corporate events, black tie events and V.I.P. sections.
The Onyx Ultima Luxury Restroom trailer is available in St. Paul/ Minneapolis, Rochester and Mankato, MN.

Every Onyx Ultima Trailer Includes:

  • Running Water
  • Simulated Wood Flooring
  • Formica Marbled Walls and Countertops
  • Heating and Air Conditioning
  • Fully Enclosed Individual Stalls
  • Female
    • 4 Porcelain Toilets in Individually Enclosed Stalls
    • 3 China Sinks in oak Cabinets with Oak Trimmed Mirrors
    • 1 Full Length Mirror
    • 1 Dual Pane Tinted Skylight
  • Male
    • 2 Porcelain Toilets in Individually Enclosed Stalls
    • 2 China Sinks in Oak Cabinets with Oak Trimmed Mirrors
    • 3 Wall Hung Porcelain Urinals with Flush Valves
    • 1 Dual Pane Tinted Skylight

Related Products

On Site Companies can offer you a wide range of portable toilet and sanitation solutions to serve your needs.


I have a special event with an estimated attendees, for hours.
  • Will there be more women than men?
  • Will there be alcohol served?