The LCN SEM7810-514 Ball Pivot Connection Link Coupler Assembly Kit is an accessory designed for use with LCN Sentronic SEM 7800 Series electromagnetic door holders. This kit, identified by LCN part number SEM7810-514, is essential for connecting extensions to the door holders, enabling adaptable installation for various door configurations. The assembly includes a coupler link and a ball pivot, which alone provides a 1-1/2 inch extension. Constructed from die-cast aluminum, the component features an aluminum painted finish (689/US28). It is compatible with the SEM 7800 Series, which meets UL listing for smoke barrier or labeled fire doors and is certified under ANSI Standard A156.15. The threaded end is 3/8-16.