We’ve made this H-bracket adapter as versatile as possible to fit today’s unpredictable VESA patterns and TV connections. These H-pattern adapter plates are compatible with the Strong® Carbon Series Articulating Mounts. 
Strong® Carbon Series H-Bracket Adapter for Articulating Mounts
We’ve made this H-bracket adapter as versatile as possible to fit today’s unpredictable VESA patterns and TV connections. These H-pattern adapter plates are compatible with the Strong® Carbon Series Articulating Mounts.  
Carbon Series Compatibility
These 600 x 400 adapter plates are compatible with the Strong® Carbon Series Medium, Large, and XL Articulating Mounts.
VESA Pattern Versatility
We know that TV manufacturers are unpredictable with placement of VESA patterns and inputs/outputs on the back of the TV. These accessory brackets are helpful if the X-pattern on the Medium mounts are getting in the way or if you need additional horizontal adjustment.