Fits 17" to 49" screens: this heavy-duty monitor arm is designed to hold a flat monitor with a panel size of 17 to 49 inches with a weight capacity of up to 39.6 pounds for flat monitors and 30.8 pounds for curved monitors. This monitor arm also uses a 75x75mm or 100x100mm VESA plate for wide compatibility. Height & Articulation Adjustment: Gs Spring Technology allows for no sagging during use. The arms offer full articulation: +90° to -45° tilt, 180° swivel, and 360° screen rotation. This monitor stand features a longer & taller height gas spring arm than other monitor arms, built for heavy duty application.