Proudly headquartered in Earth City, Missouri, Porta-King manufactures five different types of prefabricated buildings and shelter systems, and eight different types of modular wall systems, structural steel mezzanines, and towers. Since 1969, Porta-King solutions have been used for thousands of unique construction applications across North America and throughout the world.

Industrial Conditioning Equipment, LLC

Guard Booths & Buildings

Industrial Conditioning Equipment, LLC

Modular Inplant Offices

Industrial Conditioning Equipment, LLC

Modular Cleanrooms

Industrial Conditioning Equipment, LLC

Outdoor Equipment Enclosures

  • Modular Offices & Rooms
  • Modular Walls
  • Guard Booths
  • Preassembled
  • Equipment Enclosures
  • Shelters
  • Mezzanines
  • Towers

Cost effective, highly functional, easy to assemble alternatives to conventional construction.

  • We manufacture a full line of structural steel mezzanines, catwalks and work platforms, which are all designed in compliance with the latest national code (IBC 2003).
  • For added convenience, Porta-King has been awarded a GSA Federal Supply Schedule Contract, which provides federal government customers with the fastest and easiest acquisition method and contracting officers the means to make business decisions based on value practices.
  • Our Modular Systems offer the flexibility you need to suit any application.
  • Our portable buildings and shelters are designed for a multitude of applications, are constantly being modified to accommodate today’s environmental demands and customized to meet any architectural design.



Modular Building Systems

We believe in building affordable structures that last. This drive has made Porta-King’s modular buildings a long-term solution for many industries because they are equal parts adaptable, dependable, and cost-effective.

Guard Booths

A well-run facility can only survive when all employees and equipment can do their jobs to the best of their ability. Providing easily installed portable buildings ensure isolated employees and equipment can perform their duties in safe, comfortable, and practical environments.


Modular grow rooms

Indoor, vertical farming is growing in popularity as a space-efficient, highly productive way to produce a variety of crops. Porta-King Modular grow rooms or cultivation rooms offer a convenient, fast, and budget friendly way to meet your indoor agriculture needs.

Whether it’s cannabis, leafy greens, herbs or tomatoes, our modular enclosures offer many advantages over conventional construction methods to create the environmentally controlled space necessary for high quality, high yield production.

Modular Cleanrooms

Sensitive equipment inside hospitals, laboratories and manufacturing facilities all conduct processes that need environments free of contamination for peak performance and output. 

Modular cleanrooms are a secure way to create the required clean space necessary for sensitive equipment or materials.

Industrial Conditioning Equipment

Controlled Environmental Rooms

Controlled environmental rooms are essential when you need a controlled environment to produce quality goods. Choosing a modular option is an easy, adaptable, and affordable solution to your environmentally controlled needs.

Control Humidity & Temperature with a Modular Building

  • Quality Control Labs
  • Dry Rooms
  • Incubators
  • Powder Coating E-Rooms and other rooms for paint applications
  • Plant Growth Chambers

Custom Designs for Your Application Needs

  • Ceilings
  • Modular wall systems
  • Catwalks or mezzanines
  • Load bearing roofs
  • Doors

Modular Inplant Offices Provide Safety &
Comfort in a Contained Workspace

Providing a safe and comfortable work environment separate from a surrounding facility is a great way to increase employee productivity and satisfaction. 

Porta-King’s modular office buildings offer a cost-effective solution to your warehouse, factory, or government facility needs.

  • Noise reduction ratings
  • Privacy and security
  • Temperature control
  • Unlimited Size
  • Multiple stories
  • Easily Redesign Your Inplant Office as Needed with Modular Materials
  • All the materials purchased to construct your modular office system are reusable
  • Save Time & Money with Modular Construction