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The Monoprice 3403 is a VESA adapter plate that bridges mismatched mounting patterns. It converts a 50x50mm mount interface to a 400x200mm TV pattern, so a small bracket or stand can carry a larger screen. It suits people reusing an existing mount or arm with a TV whose hole spacing doesn't line up. Compared with generic adapter plates, it is a single-purpose part with a fixed pattern conversion rather than an adjustable range.
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This is the Monoprice 3403 VESA adapter plate for TV wall mounts. It is a universal plate that adapts a TV to a wall mount bracket.
It covers VESA hole patterns from 50x50mm to 400x200mm.
