riginally had a WALI Triple LCD Monitor Desk Mount. Decided to go with four monitors. So I added the WALI Dual Fully Adjustable Arm. Holds 4 monitors just great. On top are two 19" and on the bottom are two 27" monitors. Added the WALI VESA Mount Bracket Adapter because the Dell monitors didn't have VESA, way to go Dell. My desk is actually a 1" thick Melamine drafting table. So I re-enforced it with a 2x4.