The BTECH BT-8421 LCD Wall mount is designed to be used with Medium to Large LCD TVs from 21" to 37" and up to 77 lbs. Compatible with LCD screens with VESA mounting patterns of 400mm x 200mm, 400mm x 100mm, 200mm x 200mm, 200mm x 100mm, 100mm x 100mm as well as Non-VESA Monitors. Designed for concrete, brick or stud wall (16" on center) mounting with all hardware included. Universal mounting kit for all LCD Screens included. Slim-line Design mounts screen only 1.25" from wall. Quick and easy “Hook on” installation. Security locking bar included.