Yes. The Frontline WLS16 Warning Line System is designed to create a highly visible barrier that alerts workers to fall hazards on a roof, near unprotected edges, or in other restricted areas. It uses a safety-yellow post stanchion with a warning line connection point on top, plus two leg supports for stability, and it meets or exceeds OSHA 1910 and 1926 regulations. It's a strong choice when you need to designate a controlled-access zone and keep workers back from the edge without building a full guardrail.

The Frontline WLS16 Warning Line System meets or exceeds OSHA 1910 (general industry) and OSHA 1926 (construction) regulations. A warning line system is one of OSHA's recognized methods for protecting workers on low-slope roofs, warning them of an approaching fall hazard. The WLS16 stanchion is constructed from high-strength ASTM-rated steel and finished in high-visibility safety yellow.

The Frontline WLS16 is a non-penetrating warning line stanchion: it sits on the roof surface without drilling or puncturing the membrane. Each stanchion has a post with a warning line connection point on top and two leg supports fitted with rubber padding and a pair of stability plates, so it stays put while protecting the finished roof. You run a warning line cable (or pennant flag line) between multiple stanchions to form a continuous, highly visible barrier around the work area. It sets up in minutes with minimum tools.

OSHA warning line systems (OSHA 1926.502(f) for construction and 1910.29 for general industry) generally require the line to be erected around all sides of the roof work area, set back from the edge, flagged at close intervals so it's clearly visible, and supported by stanchions stable enough to resist tipping. The Frontline WLS16 is built for exactly this purpose: it meets or exceeds OSHA 1910 and 1926, uses high-visibility safety-yellow stanchions, and works with a flagged warning line to mark the hazard zone. Always follow the current OSHA setback and flagging distances for your specific roof and equipment.

The Frontline WLS16 is sold as a single stanchion or as complete kits sized by total run length. The 24' kit includes 2 stanchions, 24 ft of 3/16" coated steel cable, 3 warning flags, 6 clips, and 2 thimbles. The 96' kit includes 5 stanchions, 96 ft of cable, 12 flags, 12 clips, and 4 thimbles. The 1000' kit includes 43 stanchions, 1000 ft of cable, 125 flags, 30 clips, and 10 thimbles. Individual components (cable, clips, thimbles, and metal flags) are also available separately.

The Frontline WLS16 stanchion weighs 41 lbs and stands approximately 40 inches tall, with a footprint of about 47" x 47" at the base. It's made of high-strength ASTM-rated steel with non-corrosive materials and an electrostatic safety-yellow finish for high visibility. The base includes non-skid protective pads and a pair of stability plates, and the whole unit is portable for easy transport, storage, and setup.

A warning line system like the Frontline WLS16 is a visual barrier — it warns and directs workers to stay back from a roof edge, but it is not a physical fall-arrest or guardrail barrier. A guardrail physically blocks a fall at the edge. The WLS16 is ideal for low-slope roof work and controlled-access zones where OSHA permits a warning line, because it sets up fast, is non-penetrating (won't damage the roof), and is fully portable. For locations that require a physical barrier at the edge, a guardrail system is the appropriate choice instead.

No. The Frontline WLS16 is a non-penetrating warning line system, meaning it rests on the roof rather than being drilled or anchored into it. The bottom leg stanchions include rubber padding and non-skid protective pads specifically to protect finished roofs and substrates, and the steel is powder-coated with non-corrosive materials. This lets you set up a compliant warning line on a finished or membrane roof without puncturing it.

The Frontline WLS16 stanchion is compatible with a cable or pennant flag warning line system. It uses 3/16" coated steel cable (WLS16-CABLE316) run between stanchions and secured with clips (WLS16-CLIP) and thimbles (WLS16-THIMBLE), plus high-visibility metal warning flags (WLS16-FLAG). When you buy a WLS16 kit (24', 96', or 1000'), the matching cable, clips, thimbles, and flags are included; if you buy just the stanchion, the cable and flags are sold separately.

The Frontline WLS16 Warning Line System is available from Industrial Safety Products (industrialsafetyproducts.com) with free shipping. It's designed for fast deployment: the portable stanchions set up in minutes with minimum tools and come ready to assemble with a compatible warning line cable or pennant flag system. You can order a single stanchion or a complete 24', 96', or 1000' kit depending on how much roof perimeter you need to mark.