The MAG-SH JR unit anchors to two 5/8" Baby Pins at each end of the cart (MAG-NP CTR and MAG-S). You can use as many "Snap-On" 5/8" Baby Pins (TR-04 SHP) to run along the length of the bar allowing you to install up to three (3) 17" Monitors side by side.
Note: You may offset the Monitor Horizontal Cross Bar 8 1/4 inches towards the back or front of the cart by using two Offset Arms (MAG-V OS).