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Sentinel Containers LLC

Container guard booths and security offices for gates, yards, and sites

Steel gatehouses and anti-vandal cabins with clear sightlines, power, and climate control, delivered ready to staff.

A security guard seated inside a small glass-fronted booth
Illustrative guard booth. Photo: Crab Lens / Pexels; free use under the Pexels License.

Built for the job

  • Clear sightlines

    Windows on three or four sides let a guard see approaching traffic, the gate, and the yard without stepping outside.

  • Hard to break into

    Steel walls, security doors, and window bars or shutters make an unstaffed booth a poor target overnight.

  • Comfortable for long shifts

    Insulation, lighting, power outlets, and heating and cooling keep a booth usable through a full shift in summer or winter.

  • Delivered ready to use

    Units arrive fitted out and are set at ground level on a tilt-bed truck, so a booth can be staffed soon after it lands.

  • Moves with the project

    When a site closes or a gate moves, the booth can be lifted and relocated instead of torn down.

  • Sized to the post

    Options run from a single-guard gatehouse to a 20ft security office with room for monitors, a desk, and a break area.

A guard booth puts a person where they can see who is coming and going, out of the weather, with power for a radio, a phone, and a screen. A shipping container or steel cabin makes a sturdy booth: it locks when nobody is on post, it resists vandalism, and it can move when the site changes. We supply and modify container guard booths and security offices for warehouses, truck yards, construction sites, parking lots, ports, and events.

Picking the right size

Size follows the job the post does.

Windows, glazing, and visibility

Visibility is the point of a guard booth. Windows on the gate side and the approach side matter most, and a window facing the yard helps on patrol sites. A 20ft high cube observation container with fixed glazing runs a long band of glass for wide views. Every window weakens the wall a little, so large openings are framed in steel, and bars or shutters protect glass when the booth is empty. Tinted or reflective film cuts glare and keeps the interior less visible from outside.

Power, heat, and comfort

A booth that is too hot or too cold is a booth guards leave. A typical fit-out includes insulation, LED lighting, outlets for radios and chargers, a data point for cameras or access control, and a through-wall air conditioner or mini-split with heat. Where there is no grid supply near the gate, plan for a generator or solar and size it for the cooling load. Our guide to container offices covers power and climate options in more depth.

Security features

Anti-vandal booths use solid steel doors with secure locking, window bars or roller shutters, and no exposed hinges or fixings that can be removed from outside. A lockbox over the padlock stops bolt cutters on the main door. For more on locking up a container, read how to secure a shipping container.

Placement and permits

A booth should sit on firm, level ground or simple pads, with the door clear of traffic lanes. Leave room for the barrier arm, bollards to protect the booth from vehicles, and a cable route for power and data. Smaller booths arrive on a tilt-bed truck and set at ground level, with no crane needed for a standard unit; we check site access first. Permit needs vary by location and by whether the booth is wired, so check with your local building department.

A staffed gate often sits beside a site office for a construction project. Tell us the post, the number of guards, and the power available, and we will send a free, itemized quote.

Related services

  • 01Custom ModificationsDoors, windows, HVAC, and full fit-outs
  • 02Container DeliveryTilt-bed delivery, coordinated door to door

Put containers to work in security

Tell us about your project and we will send a free, no-obligation quote.