The PMX660's solid steel frame safely holds up to 125 lb (57 kg), even at full extension. TV Size: 37' - 80' Supports VESA 200×100 - 600×400 Extends 2.5? - 22? (6.3cm - 55.9cm) Horizontal Offset 12" (30.4cm) of total offset Center your TV on the wall regardless of where your studs are located by adjusting the PMX660's arm assembly 6" (15.2 cm) left or right.