Adjustable and easy to use guardrail system for parapet walls and floor slabs. Unique tubular design allows for easier placement and installation. Adjustable rail brackets for easy and fast attachments of 2 x 4's. By inverting the compression base, you can use as a universal guardrail for exposed floors, walkways, and decks or where ever you need a fall protection system. Maximum spacing of 8 ft. Complies to OSHA standards.