The Peerless Industries DS-VWS040 Wall Plate Alignment Spacer is designed for use with the Full-Service Video Wall Mounts for 40 to 65” (101.6 to 165.1 cm) displays. This spacer when set into place, reduces installation time without requiring additional tools. With simple installation and easy micro-adjustments, the displays are aligned with precision and held close against the wall for a clean, low-profile appearance. All you have to do is install the first mount and then use the wall plate spacer to place each additional mount on the wall. The spacer eliminates measuring, guessing, on-site installation calculations, and mistakes in mounting your displays.