Triple monitor mount fits most flat or curved PC monitor brands with screen size of 17 18 19 20 21 22 23 24 25 26 27 inch. It is compatible with VESA pattern 75 x 75mm and 100 x 100mm. Please note: if there are no VESA holes in the back of your monitor, a VESA adapter is needed. Constructed of high-grade steel, our 3 monitor desk mount features premium gas spring system - after over 25,000 exercise tests - bearing a max weight capacity of 17.6 pounds, which is strong enough to hold three screens securely. Enjoy a comfortable peripheral view with full motion compression arms that support -45°to +90°tilt, 180°swivel, 360°rotation and height adjustment. Freely set your monitors to landscape or portrait mode! The 3 monitor stand supports c-clamp (drill-free, compatible with desk thickness of 0.39'-3.35') and grommet mount (desk thickness of 0.39'-3.35' and desktop hole diameter of up to 2.4').