Our Kangaroo Quad Adjustable Height Desk is for those of you who use 4 monitors and want the same adjustability as the rest of our adjustable height desk. This model has extra heavy duty springs and additional linear guides which are necessary considering the weight of 4 monitors.Monitors must be VESA 75 x 75 or 100 x 100 compliant to be mounted, they must weigh 10 lbs or less each and the maximum screen size is 24". If you have questions regarding your monitors specifications, please give us a call.