Heckler H497 AV VESA Adapter Kit for Heckler AV CartWant to use Heckler AV Cart and your display does not have a VESA 400x400 mounting pattern? Simple to solve with these adapters you can mount displays with horizontal and vertical mounting holes spacing of 200, 300, 500, and 600 mm. The Heckler AV Cart was designed to support 400 x 400 VESA displays, and with this VESA Adapter Kit you can use VESA 200 to VESA 600, so you can equip the Heckler AV Cart with smaller displays for personal huddle rooms,