FITS 13’ TO 27’ SCREENS - Dual monitor mount fitting two screens 13" to 27" in size and 22 lbs in weight each with VESA 75x75mm or 100x100mm backside mounting holes. ARTICULATION & HEIGHT ADJUSTMENT - Adjustable arm offers +90° to -90° tilt, 180° swivel, 360° rotation, and height adjustment along the center pole. Monitors can be placed in portrait or landscape orientation. HEAVY DUTY C-CLAMP - Mounts to the back of your desk (up to 4" thick) via a heavy-duty C-clamp or optional grommet mount.