To hang a Vector ProTM LCD Projector Mount from 1/2-13 threaded rod a Threaded Rod Adapter model ACC 810 is required. This Adapter interfaces with Threaded Rod Kit model ACC 820 or any 1/2-13 threaded rod. The lower end of the threaded rod is threaded through the hole in the adapter and secured from below with one nylock nut. The Vector Pro Ball and Socket Unit is then threaded on to the adapter and secured. The 3" sections of threaded rod included in the ACC 820 Threaded Rod Kit may be joined using a coupler. Primary InformationProduct Type : Projector ceiling mount adapter UNSPSC CodeUNSPSC Code : 24102001 Product IDUPC: 735029102076Manufacturer Part: ACC810