Mount-It! VESA Mount Adapter Kit | TV Wall Mount Bracket Adapter Converts 200x200 mm Patterns to 300x300 and 400x400 mm | Fits Most 32 Inch to 55 Inch TVs | Hardware Included : Amazon.ca: Electronics
VESA Mount Guide: What Is the VESA Standard | Ergotron
RiteAV - VESA 300 Adapter, Change 200x200 Pattern to 300x100 300x200 and 300x300 : Amazon.ca: Electronics