Yes. The Guardian 15170 Parapet Clamp is a non-penetrating, no-drill guardrail system that clamps onto a parapet wall without damaging the roof or building surface. It adjusts to parapet widths from 4 to 24 inches, can be set up by a single person (often without ladders or scaffolding), and ships as one clamp plus its guardrail post (part #15175). Made of galvanized and powder-coated steel, it's reusable and corrosion-resistant, and it meets or exceeds OSHA 1910.140 and OSHA 1926.502. It's a passive barrier for Fall Prevention — a strong choice for contractors who want compliant roof-edge protection without drilling anchors.

The Guardian 15170 Parapet Clamp Guardrail System meets or exceeds OSHA 1910.140 and OSHA 1926.502, the federal fall-protection compliance standards listed for it in general industry and construction. Guardian also issues a Declaration of Conformity to ANSI/ISEA 125-2021 — a Level 2 conformity assessment backed by the manufacturer's ISO 9001-registered quality system. When installed correctly, its top rail sits 42 inches (±3 in) above the work surface as OSHA requires.

The Guardian 15170 uses a clamp-on mechanism that grips the parapet wall — no drilling, no anchors, and no damage to the building surface. An adjustment rack and clamp adjuster let you set the clamp snug to walls from 4 to 24 inches wide (minimum parapet height 7 inches), secured with a locking pin and clasp. Once tightened flush against the parapet, the guardrail post drops in and standard rails install into the post. The result is a firm, freestanding barrier that's fully reusable and removable.

No. The Guardian 15170 is a Fall Prevention (guardrail) system — a passive barrier that keeps workers away from the edge — and must never be used as a fall arrest anchor. Guardian's instructions are explicit: never connect personal fall arrest, restraint, work positioning, climbing, or rescue systems to a guardrail, and never lean or climb on it. If workers need a tie-off point, use a dedicated fall arrest anchor selected by a Competent Person, not the parapet clamp.

The Guardian 15170 includes one parapet clamp and one system-specific guardrail post (part #15175); it ships with free shipping. It does not include the rails — you supply standard 2x4 or 2x6 construction-grade lumber, or compatible snap-on metal rails, to run between posts. For a full run you'll need multiple clamp-and-post units: OSHA and Guardian allow a maximum spacing of 8 feet between clamps, so a complete guardrail line uses several 15170 units plus your rails.

For roof-edge work on a parapet, often yes. A guardrail such as the Guardian 15170 is passive protection — it physically blocks workers from the edge, so there's no tie-off, no harness donning, and no fall-clearance calculation for the crew at the barrier. A personal fall arrest system only activates after a fall and requires training, anchors, and rescue planning. The 15170 installs without drilling, is reusable, and is built from galvanized/powder-coated steel for repeated jobsite use. For many parapet applications it's the simpler, lower-maintenance path to OSHA compliance, though a Competent Person should confirm the right system for the site.

The Guardian 15170 fits parapet walls from 4 to 24 inches wide (10.1–60.9 cm) with a minimum parapet height of 7 inches (17.7 cm). Clamps may be placed a maximum of 8 feet (2.4 m) apart along the edge. Each clamp holds a guardrail post so the top rail sits 42 inches (±3 in) above the work surface, per OSHA. Plan the layout and spacing before installation — a Competent Person should confirm the parapet is compatible.

The Guardian 15170's post accepts standard 2x4 or 2x6 construction-grade lumber, or compatible snap-on metal rails. When using lumber, overlap the rails a minimum of 12 inches at each end between consecutive posts and lap them in a continuous direction. The top rail must sit 42 inches (±3 in) above the work surface, with a mid-rail halfway down; toeboards may also be required depending on slope or fall-object risk. All rails and components should be deemed compatible by a Competent Person.

Yes. The Guardian 15170 is made from a combination of galvanized steel and powder-coated steel for strong corrosion resistance, making it durable and reusable across jobs — you clamp it on, use it, then remove it without leaving holes in the roof. Each clamp weighs about 21.72 lb (9.85 kg). Clean off dirt and contaminants before and after use (mild soap and water), and store it away from heat, moisture, and chemicals to protect its service life.

It depends on the length of the edge you're protecting, but the key rule is spacing: Guardian 15170 clamps may be placed a maximum of 8 feet (2.4 m) apart. Divide the run by 8 feet to estimate the number of clamp-and-post units, then add one for the end. Each unit includes its post (#15175); you supply the 2x4/2x6 lumber or snap-on metal rails to span between them. A Competent Person should plan the full layout before installation to avoid moving components later.