FITS 17" TO 49" SCREEN - Single monitor desk mount fits most flat/curved/ultrawide computer monitors up to 50 lbs (23 kg) in weight with VESA 75x75mm or 100x100mm mounting holes. SAVE VALUABLE SPACE - Heavy-duty metal base only take up 4.7" x 4.3" (120mm x 110mm) desk surface. The c-clamp and grommet mounting options support up to 3.3" (85mm) desk thick.