VESA, short for Video Electronics Standards Association, is an international organization founded in 1989 that established industry wide standards for uniformity in the video electronics market. VESA wall mounts have become especially important for mounting flat-panel plasma televisions and LCD monitors. The standards provide equipment manufacturers with specific guidelines of mounting-hole pattern placement and screw size in three different designs which are based on the monitor's weight and size of the screen.
The VESA MIS-D is the standard design for small- and medium-sized flat panels, LCD monitors and screens. The design accommodates screens that range in size from 12 to 22.9 inches diagonally with a maximum weight of 30.8 pounds. The four-hole screw pattern ranges in size from 2.95-by-2.95 inches to 3.94-by-3.94 inches.
The VESA MIS-E standard design is for larger LCD monitors, flat panels and screens with a maximum weight of up to 50 pounds. It can accommodate screen sizes between 23 and 30.9 inches diagonally and includes two six-hole screw patterns: 7.87-by-3.94 inches, and 7.87-by-7.87 inches.
The VESA MIS-F standard design is for large LCD television monitors and plasma screens. Designed for displays that range from 31 to 90 inches diagonally, it can accommodate weights of up to 250 pounds. It includes three different hole patterns: 15.7-by-7.87 inches, 23.57-by-15.7 inches, and 31.4-by-15.7 inches.