Fellowes Platinum Series Dual Stacking Monitor ArmPlatinum Series Dual Stacking Monitor Arm increases valuable desk space and creates a multi display productive work area. Save space in tight work areas with a dual stacked position. Easily connect your favorite devices with two USB ports conveniently located at the base of the product. Make easy and effortless monitor adjustments with the innovative gas spring technology. Height adjustment ranges from 3 1 2" to 25". Depth adjusts from 3 1 2" to 18 1