Modular Safety: Defining Work Zones with Kee Mark
The Kee Mark Modular Warning System is an exceptionally sturdy and portable solution designed to define safe perimeters on elevated work surfaces. Appropriate for year-round indoor and outdoor use, this freestanding system helps organizations maintain OSHA compliance by clearly marking fall hazard zones.
Kee Mark serves as a visual indication of a fall hazard and is intended to function as an OSHA-compliant warning line, not as a physical barrier against falls. Ensure your work site fully adheres to all applicable OSHA regulations before deployment.
OSHA Compliance Achieved
When configured and utilized correctly as part of a compliant site plan, the Kee Mark system meets OSHA’s requirements for a temporary, mobile warning line system, ensuring worker safety through clear hazard identification.
Simple Installation, Endless Length
The inherent modular design allows for simple, rapid assembly. Durable galvanized components connect with a hidden set screw for stability.
- The system can be purchased in 10, 15, or 20-foot cable sections.
- Multiple systems easily align to form a warning perimeter of any required length.
- The 1/8″ stainless steel cable is easy to adjust using the included two stainless steel shackles.
Quality Construction
Kee Mark is built to withstand demanding job sites:
- The system achieves its stability without penetration; portable base weights made from durable recycled rubber secure the uprights to the surface.
- Uprights are made of tough galvanized material.
- The safety line is stainless steel, vinyl-coated in highly visible safety yellow.
- Large safety orange heavy-duty nylon mesh flags maximize the visual warning.
Warning Line Photos
Modular Railing Systems Solutions
We offer comprehensive modular railing system solutions applicable across a wide range of industries.Â

Guardrails
Guardrails
Instant, OSHA-compliant protection. This permanent, free-standing system provides a robust safety barrier without drilling or penetrating your roof membrane.

Handrails
Handrails
Exceeding all safety standards. Guard workers, pedestrians, and equipment with our fully tested, ADA-compliant railing systems.

Skylight Guardrails
Skylight Guardrails
Fall protection made simple. Our freestanding system is the quick, effective way to address all your skylight safety concerns and compliance needs.

Safety Gates
Safety Gates
Modular Railing Systems has safety gate solutions for customers who are in need of providing an easy to install entrance into an area that maybe hazardous at times.

Pallet and Mezzanine Gates
Pallet and Mezzanine Gates
Modular Railing Systems has developed a system specifically for customers looking to protect their employees while pallets are being positioned.

Platforms & Crossovers
Platforms
Seamlessly cross any rooftop obstruction. Our modular crossover platforms provide the customizable, safe access solution your workers need.

Hatch Railing
Hatch Kits
Secure rooftop access, guaranteed. Promote safe, worry-free entry and exit while actively preventing dangerous falls into open hatches.

Walkway
Rooftop Walkway
The clear path to rooftop safety. Optimize worker safety with our preferred fall protection system, available with or without integrated guardrail.

Warning Line
Warning Line
An OSHA-compliant warning line that serves as a visual indication of a fall hazard or to control access to hazardous areas.





