3M DBI-SALA Maxi Clamp is a 4-pack kit (Z,U,E)for bulb type, single folded, and double folded standing seams and use with roof top anchorPeak performance where it matters most. Protecting your workers and elevating their roof safety is the number one priority for 3M Fall Protection. 3M's anchorage connectors are built from quality materials providing high strength and durability to stand up to the toughest environments with hardware that helps resist corrosion. 3M's anchorage connectors are designed to give your workers the freedom to move wherever the job takes them featuring permanent, portable, and reusable systems with compact and lightweight designs that can be removed and simply reinstalled in a new location. Featuring versions with adjustable feet and legs to accommodate most roof pitch angles, and quick and easy screw type installation, combines ease and versatility for added jobsite flexibility. Whether your roof is flat or sloped, wood, metal or concrete, anchors can be installed to a variety of materials to provide a tie-off point for your personal fall protection system. Anchorage connectors are the foundation of most fall protection systems, often overlooked but critical components because they securely attach your system to the anchorage. Your choice of anchor depends on the type of work being done. Each D-ring accommodates a self-retracting lifeline, vertical lifeline, or lanyard. Anchorages are sold by what they connect to (general/ all purpose, steel, concrete, roof, or specialty), whether they are fixed or mobile, and whether they are permanent or portable. They all must provide a secure point of attachment for a complete personal fall arrest system and must be capable of supporting a load of 5,000 lbs. (22kN) or of meeting OSHA’s criteria of a 2 to 1 safety factor.