The 40-SK-30 is a set of "L" shaped brackets that secure SharkRack computer cabinets to the floor of a data center. The 40-SK-30 is compatible with both the Series 2 and NT versions of SharkRack computer cabinets: 40-ECAB-SRS2-70, 40-ECAB-SRS2-77, ECAB-R19-NT-70, ECAB-R19-NT-77. The 40-SK-30 brackets can be bolted to the bottom of SharkRack computer cabinets and then bolted to some type of floor system using 3/8" bolts.These braces are not designed to be seismically resistant, but they will secure computer cabinets and prevent tipping and unwanted movement.To install the 40-SK-30, users must first remove any tipping system already in place, such as stabilizer arms or the heavy-duty anti-tip guard 40-RST-HD.The braces can then be applied to all 4 corners of the computer cabinet.