Perimeter Defender 39-XXXXXX-R30 Safety Warning Line Cone with removable 30 lb base. 46 inch high safety orange cone made from high-impact polyethylene with ultraviolet stabilizer for fade resistance. Cone has 39 inch OSHA Compliant warning line tie-off height. Cone comes with two mounting holes for warning lights or signs. Two piece design are stackable with or without bases. 30 lb rectangular base is made from 100% recycled rubber. Base has two easy-grip handles. Tabs around base of cone for positive lockup and easy attachment to the base. 30 lb rectangular shaped base designed to resist OSHA requirement of 16 lbs horizontal force without tipping over. 14" x 30" base if knocked over designed not to roll along roof surface as a round base would. Spacing between cones shall be such that the 34" to 39" warning line height is maintained. Skid resistant rubber base will not damage roof surface or leave rust marks on roof. Warning line cones are easy to set up and remove. Tie off for flagging is easy to use. Simply wrap cord around the base of the cone handle and continue to the next cone. Non-conductive poly cones and rubber bases. System does not include flagging.