The WMXA1 adapter bracket is designed for use with the Sanus VMPL3 plasma/LCD TV wall mount. The adapter adds extra width to the mount so it can accommodate a wider variety of TVs, including 65" Panasonic plasmas.
Will this mount work with my TV?
Use the Sanus MountFinder to see a list of mounts that work with your specific TV.
Where do I drill the holes?
Tell the Sanus HeightFinder Installation Assistant how high you want your TV, and it tells you exactly where to drill.