The MantelMount SBXL Sound Bar Adapter accommodates more soundbars than the bracket that comes standard with the MM540, MM700, MM750 and MM860 in that its compatible with wider, taller or smaller soundbars. It also accommodates those mounting their sound bar ABOVE the TV, where as the sound bar attachment included with the MM540, MM700 and MM750 only allows for sound bar placement beneath the TV. The MantelMount SBXL consists of two universal soundbar brackets that fit nearly all flat panel TVs and soundbar models

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