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8x40 Portable Storage & Portable Office Combo

Our largest combo mobile office provides easy ground-level access, secure storage, and complete security with our patented Tri-Cam Locking System®. Separate interior compartments and a door for additional flexibility make this unit ideal for large job sites to secure heavy duty equipment and tools. The office-storage combo offers the best of both worlds—allowing you the flexibility to do what you need. 


40ft Combo Office diagonal view
40ft Combo Office side view
40ft Combo Office backside view
40ft Combo Office Floorplan
40ft Combo Office diagonal view thumbnail
40ft Combo Office side view thumbnail
40ft Combo Office backside view thumbnail
40ft Combo Office Floorplan thumbnail

Security Features

High-Security Door System
Each mobile security office features easy-opening interior doors with a three-point interior locking system and D-ring plus discus lock, adding an extra level of security. 

  • 16-gauge door skin & welded door frame
  • MMI patented bolt lock technology
  • Heavy duty welded hinge system



Ground Mounted
8’ ceiling height
8’ wide
40’ box size
40’ long

Exterior Finish

All steel structural components
1 ⅛” plywood sub floor
Standard drip rail gutters
10-16 gauge floor; Joist 12
16-gauge steel siding

Interior Finish

Drywall textured flat ceiling
Vinyl tile floors
Drywall textured 



A clearance of 120’ is required for our and 40’ containers. Our trucks require a 21’ vertical clearance for loading and unloading containers. We can provide a free site check, where one of our drivers will come out and determine the most appropriate location. 


Heating and Cooling
Vertical HVAC

Exterior phone / data jack access
120/240 Volt, single-phase
125 amp breaker panel
Fluorescent ceiling lights
Requires a 30kW Generator (Not Included) or Connection to a Power Line

Windows and Doors
Hydraulic door closures
Mini blinds
Exterior security
Horizontal slider windows with screens
High security door system with three-part interior locking system

Whether you need one unit or a hundred across the country, our dedicated drivers will swiftly and carefully deliver your unit directly to your door, and help you find the safest and most convenient place to put it on your site. They can even help show you how to use the specific features on your unit if you need assistance. Because we own trucks we are a reliable and cost-effective solution.

For customers with long-term logistical needs, we can relocate your empty office to your next jobsite. This additional solution makes us more flexible and responsive to meet your needs. It can also means extra savings for you.

Returning your unit is just as convenient. Schedule your pick-up on the MM CONNECT customer portal or give us a call. 

Mobile Mini National Accounts
Synchronize your supply chain across the US through our National Accounts Program. You’ll get preferred pricing and hassle-free access to the largest selection of products. With over 150 locations, we are one of the only companies in our industry with a national footprint to meet your storage needs nearly anywhere.

Step into the Driver’s Seat
MM Connect, our state-of-the-art customer portal puts the power in your hands to see all products on rent, locations, and costs in one view, on demand. Easily request service, pickups, and relocations, while accessing your account information in real-time.

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