Durable steel and aluminum construction! This model includes a c-clamp mount. which features a cleaner look and requires less space under the desk’s surface edge for attachment.Sleek and streamlined. the LX frees up space and allows positioning of your display for greater productivity. Reposition your LCD with just a touch. Up. Down. Forward. Back. The LX provides unparalleled range of motion.- C-clamp mount presents a cleaner look when desk is seen from back; requires less space under the desk’s edge for attachment- Increase viewing comfort—help reduce eye. back and neck strain- Upgrade LCD monitors and TVs with improved ergonomic adjustment- CF™ motion technology provides premium ease-of-use display adjustment- Cable management feature routes cables under the arm. out of the way- Extends LCD up to 25" (64 cm); push your display out of the way when not in use- 13" (33 cm) height range meets the ergonomic needs of more than nine out of ten adults- Arm folds back over the base into a compact retracted position; perfect for tucking under systems furniture storage shelves or cabinets in space constrained areas- Passes Ergotron’s 10.000-cycle motion test. which ensures years of trouble-free height adjustment