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The Sanitation Manufacturing Partner
Sanitation Containers.
Built to Scale.
Mobile Modular delivers modular space nationwide. Steelhart is the manufacturer behind the hard sanitation infrastructure — the restrooms, showers, and wash stations that demand the most complex plumbing, waste handling, and climate sealing in the fleet. We build them to spec, branded for Mobile Modular, and ready to deploy at scale. Built to Last.
The Sanitation Specialists Behind the Fleet.
Mobile Modular owns the customer relationship and the fleet. Steelhart owns the hard sanitation manufacturing — the restrooms, showers, and wash stations that require complex plumbing, waste pumping, and sealed climate control. Together, a single-source manufacturing partnership that scales with Mobile Modular's nationwide demand.
Containerized Products Built for Mobile Modular
Each unit is manufactured by Steelhart and branded for Mobile Modular — a turnkey catalog that covers security, climate, sanitation, water, and specialty infrastructure for any jobsite.
Ready2Go Guard Shacks
Rapid-deploy security checkpoints
Durable, weather-resistant security booths built from shipping container conversions — featuring windows, interior climate control, and 360° visibility for access control at any site entrance.
- Shipping container conversion construction
- Built-in HVAC and insulation
- 360° visibility windows
- Quick-connect power ready
Cool Down Containers
Heat-stress recovery on site
Climate-controlled shipping containers equipped with bench seating and freezer curtains — dedicated break spaces that protect crews working in high-heat environments and keep them compliant with heat-stress regulations.
- High-capacity climate control
- Bench seating and freezer curtains
- Insulated, sealed interior
- Designed for heat-stress compliance
Water & Wastewater Systems
Self-contained site utilities
Heavy-duty, self-contained systems housed in 20-foot containers for handling significant fresh water and wastewater needs on construction projects — from compact units to large-capacity systems for remote sites without utility connections.
- Fresh water storage and delivery
- Wastewater and sewage pumping
- 20-foot containerized enclosure
- Self-contained or utility-tie configurations
Containerized Restrooms
Jobsite sanitation at scale
Containerized restroom units from 4-station to 10-station configurations — equipped with private stalls, urinals, sink vanities, and commercial-grade climate control. Available with separate male and female entrances for high-traffic environments.
- 4- to 10-station configurations
- Private stalls and sink vanities
- Commercial-grade climate control
- Integrated fresh water and waste tanks
Hydration Stations
Chilled drinking water on demand
Mobile 4-station hydration trailers designed to provide chilled, filtered drinking water with onboard storage and bottle-filling stations — keeping crews hydrated and safe on remote or high-heat job sites.
- Chilled, filtered drinking water
- 4-station bottle-filling configuration
- Onboard water storage
- Mobile trailer deployment
Refrigeration / Freezer Trailers
Temperature-controlled storage
Commercial-grade refrigerated and freezer trailers designed for temperature-sensitive storage — featuring seamless fiberglass construction and internal refrigeration units built for demanding job site and industrial environments.
- Refrigeration and freezer configurations
- Seamless fiberglass construction
- Internal refrigeration unit
- Transportable trailer design
They Own the Fleet.
We Own the Hard Build.
Sanitation containers — restrooms, showers, wash stations — are the most complex builds in the modular fleet. They demand integrated fresh-water delivery, waste pumping and holding, commercial-grade plumbing, and sealed climate control, all packed into a shipping container conversion. Finding a manufacturer who can deliver that complexity at the volume Mobile Modular's nationwide fleet demands is the challenge.
That manufacturer is Steelhart. Sanitation is what we do. Every plumbing run, every waste tank, every climate-sealed interior — built in our Elkhart forge, branded for Mobile Modular, and ready to ship at scale.
Engineering. Design. Manufacturing.
The same three disciplines behind every Steelhart build — applied to every unit in the Mobile Modular catalog.
Engineering
Our in-house engineers minimize the problems that can lead to higher costs — every build is CAD-driven and structurally validated before it hits the floor.
Design
A robust quality program cross-checks every engineering design function, so what we draw is what we build — down to the weld.
Manufacturing
Each product is created with the utmost attention to detail in our Elkhart, IN facility, built to meet and exceed expectations for the field environments Mobile Modular serves.
Let's Build the
Sanitation Fleet
This page is a starting point. Let's talk through the sanitation lineup, the specifications, and the volumes — and forge a manufacturing partnership that keeps Mobile Modular's restrooms, showers, and wash stations stocked and ready to deploy nationwide.