I installed this over the mantelpiece (this is a fireplace with a firebox and a chimney that is separated from the inside and outside walls of the house by the airspace, so there is no intense heat that could damage the TV). It fitted the back of the TV, was fairly easy to install, but required two people to properly install the TV. This was due to the size of the TV. I'm pretty sure I could do 55 inches myself.
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