Elevate Your Jobsite with Mr. John’s Compact Office Trailer Solutions

Are you looking to revolutionize your jobsite efficiency? Look no further than Mr. John’s innovative compact office trailer solutions. With a perfect balance of versatility and practicality, these options are designed to take your projects to new heights. 8×24 Office Trailer – Perfect for projects where space efficiency is key without compromising on functionality. Discover… Read more »


Removing The Stereotype

Sporting events, construction sites, oil & gas sites and festivals. These are all locations one would expect to see portable restrooms. And this is why we want to step in to set things straight!    Us at Mr. John & Tri-Boro Trailer want you to rethink your definition of portable sanitation for upscale events and… Read more »


Winter Is Around The Corner!

Winter can be unpredictable. Be prepared and cozy with our featured products providing maximum comfort and productivity for your people and materials!   8×32 Combo This mobile office and storage combo trailer includes a single office with one entry door and storage area with roll up garage door. Features for this unit include: standard furniture… Read more »


New Tri-Boro Trailer Site Has Arrived

Out With The Old and In With The New! Sorting through various products and pages can be overwhelming, so we wanted to make Tri-Boro Trailer’s website more efficient than ever. Our newly redesigned website has enhanced, user-friendly features giving site visitors ease when navigating through pages, printable PDF’s, guidelines, and much more. What Else Is… Read more »


The pieces of Mr. John

At Mr. John, we are passionate about our work and delivering reliable service to our customers each and every time.  Quality makes a difference and here is what separates us from the competition.


Oh, the places we’ll go!

Whether you have a job in Pittsburgh PA or Nashville TN, Mr. John is ready to handle all of your portable sanitation needs. Our portable toilets come in all shapes, sizes and varieties. We can add a sink, a sling or a heater to any portable toilet in our fleet. We have restrooms perfect for… Read more »


The Finer Details of Special Event Sanitation Planning

Restroom trailers and a deluxe porta potty rental might be just what you need to complete your next special event. These types of portable sanitation units are designed to help provide you with the facilities you need for your guests or event attendees. Making provisions for portable restroom trailers requires you to invest some time… Read more »


Sanitation Planning Checklist – Infographic

The secret to the success of any event is proper planning and preparation. However, amidst all the other moving parts of the event planning process, sanitation needs can often fall by the wayside.