For a mast extension designed to be used in conjunction with 3M DBI SALA Confined Space HC (High Capacity) Davit Arm, use 3M DBI SALA Confined Space HC (High Capacity) 144 cm Mast Extension. Our mast extension is constructed primarily of custom extruded aluminium and cold drawn steel, and finished in a mixture of hi visibility green and zinc plated coatings. It can be interchanged with other 3M DBI SALA Confined Space HC (High Capacity) Mast Extensions to change davit system height. When used as part of our complete system, this product is certified to EN795:2012 for fall arrest. Multiple user fall arrest is supported for up to two users weighing 140 kg each, meeting the requirements of CEN/TS 16415:2013. Material handling capabilities are made possible by meeting the requirements of the machinery directive for manually operated lifting 2006/42EC.Capacity is granted up to 205 kg in mobile bases, and 340 kg in fixed bases when suitable devices are equipped. Rescue is also made possible meeting the requirements of EN1496:2012 when used with approved 3M rescue devices. All 3M DBI SALA HC bases are designed to be used in combination with 3M DBI SALA HC Davit Masts, and together form a perfectly matched confined space rescue and work support system. When it comes to confined space entry/rescue, it's essential that equipment operates perfectly and quickly. 3M has an extensive line of rescue and retrieval systems with decades of proven field service. Safety engineers and site directors trust 3M DBI SALA for the type of high quality, rugged systems that will ensure top performance when it is needed the most.