Rooftop parapet walls can often be difficult to protect, particularly when a free-standing railing system does not fit on the roof’s profile. Our Clamp-On Rail system solves this problem by attaching to a structurally sound parapet wall, secured in place with no penetration into the building envelope. These clamps are available in three sizes based on the thickness of the parapet wall — and our railing simply slides into the clamp and is adjusted to the proper OSHA-compliant height of 42” above the walking surface.