Atdec AC-AP-4040 Adaptor Plate for 20-Inch to 47-Inch Displays and 400x400mm to 200x200mm VESA Support Mounting Holes, Black Maximum Load: 25kg (55lbs). Compatible with Telehook:TH-1032-VFM, TH-1040-VFM, TH-1040-CTS, TH-1040-CTL, TH-1040-CT-B2B, TH-2040-VTR, TH-2250-VTP. Product supports VESA mounting hole patterns: 200x300mm, 200x400mm, 300x200mm, 300x300mm, 300x400mm,400x200mm, 400x300mm, 400x300mm, 400x400mm All fasteners are included. Warranty: 10 years limited