This incredibly versatile product supports up to four 24" monitors each with a maximum individual weight of 17.6 lbs. Not only will this strong and sturdy mount have no trouble holding VESA certified 75x75 or 100x100 monitors, (fitting the above criteria), it is also extremely adjustable! Each monitor can be placed at a different height to accommodate different sized monitors All four monitors have 360� rotation (meaning landscape, portrait, or anything in-between) Also included is a +/- 20� tilt in any direction Individually for ALL 4 Monitors, ensuring maximum user comfort Height adjustable, with a maximum height of approximately 27" from the desk to the center of the highest mounting device Benefits of Clamp Mounting: Clamp Bases are an excellent mounting option! They are screwed onto the edge of a desk for maximum space. (Clamp bases require a lip on the desk 8-50 mm thick and 85 mm deep) They are the sturdiest mount of the three kinds (stand, clamp and grommet) They take up the least amount of desk space (So much more room for activities!)