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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Ultra Lav II Shower Trailer



Height10 feet (with air conditioning unit)
Width6 feet
Length16 feet
Shower UsesAccommodates approximately 54 – 5 minute showers alone
Restroom UsesAccommodates approximately 900 restroom uses alone.

Shower Like Home Anywhere

On Site Companies Ultra Lav II Shower Trailer is perfect for special events or home renovations where functioning showers may not be available. This shower trailer includes a working toilet, sink and shower in each of the two stalls. Call one of our locations to learn how the Ultra Lav II can improve your special event or home renovation. Common uses include: Building Construction, Family Reunions, Special Events and Disaster Relief.

Every Ultra Lav II Includes:

  • Dual Station Restroom Facility
  • Push Valve (30 second cycles)
  • Hot Running Water (preset 120 degrees)
  • LED Porch Light & Occupancy Indicator Light
  • Ceramic China Pedal Flush Toilet
  • Roof Mounted Air Conditioning Unit
  • 320 Gallon Fresh Water Holding Tank

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?