LX HD Sit-Stand Desk Mount Arm


The LX provides unparalleled range of motion, featuring 20 inches of vertical adjustment—enough for a user’s sitting or standing posture—and 62 inches of side-to-side adjustment.

Perfect for Apple Displays and legacy iMac models that support Apple’s VESA Mount Adapter, this versatile arm can be used in a variety of applications to accommodate large displays, all-in-one computers or even mid-sized TVs.

Fully Adjustable

20-inch (51 cm) height range allows users to move between sitting and standing positions while they interact with the display. Patented CF™ motion technology provides premium ease-of-use adjustment.


Accommodates mid-size displays and all-in-one computers weighing up to 30 lbs (13 kg).

Free Your Workspace

Extends/retracts LCD up to 33" (84 cm); push it out of the way when you’re not using it. Also ideal for space-constrained spaces: it folds to within 4.5" (12 cm) of back of desk in storage position.

Graceful Ergonomics

Position your display right where you want it—for maximum ergonomic comfort to relieve eye, neck, and back strain. Upgrade LCD displays and TVs with improved ergonomic adjustment.

Cable Management

Cable management clips on the under side of the arm route and hide cords.

Setup is Simple

Quickly attach to edge of desk via clamp (attaches to edges up to 2.5" thick) or grommet mount (attaches through holes 0.5" to 2.5" wide). Installation is secure with locking connections between arm, extension and base.

Part Number: 45-384-026

LX HD Sit-Stand Desk Mount LCD Arm (polished aluminum)

Includes LX HD sit-stand arm, extension, desk clamp base, grommet-mount base, 40 cm pole, VESA brackets

Cable management clips on the under side of the arm route and hide cords

Locking connections between arm, extension and base offer increased theft deterrence and prevent potential disconnections caused by jarring or impacts

Quality Tested: 10,000-cycle test applied to lift mechanism, ensuring years of trouble-free height adjustment

Pans at base 360°; rotates at extension 90°

Monitor tilts 75° up and 5° down

NOTE: Computer systems mounted on this product may require extra long USB, power or video cables in order to span between standing and sitting heights

Weight Capacity: 14 to 30 lbs (6.3 to 13.6 kg)
Lift: 20" (51 cm)
Tilt: 80°
Pan: 360°
Rotation: 90° Portrait / Landscape
Mounting Options: Desk clamp attaches to edge up to 2.5" (65 mm) thick; grommet mount attaches through hole 0.5" to 2.5" (7–65 mm) wide and up to 2.5" (65 mm) thick
Mounting Standards: VESA MIS-D, 75/100 (hole pattern = 100 x 100 mm & 75 x 75 mm), MIS-E (hole pattern = 200 x 100 mm), MIS-F (hole pattern = 200 x 200 mm ONLY). Optional VESA Bracket Adaptor Kit (97-759) can be ordered separately for MIS-F interface with hole pattern of 400 x 200 mm, 400 x 300 mm or 400 x 400 mm
Shipping dimensions: 25" x 14.75" x 7.5" (64 x 38 x 19 cm)
Shipping weight: 20 lbs (9.1 kg); actual product weight: 17.5 lbs (8 kg)
Warranty: Five (5) years

Product Sheet (752 KB)

Dimensional Illustrations (483 KB)

Installation Manual (2744 KB)

Apple Products
Thunderbolt Display (27-inch) Compatible
Requires Apple Adapter
LED Cinema Display (27-inch)
27-inch iMac® (Late 2013) Limited Compatibility*
21.5-inch iMac (Late 2013)
Legacy Apple Products
LED Cinema Display (24-inch) Compatible
Requires Apple Adapter
Cinema Display (30-inch)
Cinema Display (23-inch)
Cinema Display (20-inch)
27-inch iMac (Late 2012) Limited Compatibility*
27-inch iMac (Mid-2011) Compatible
Requires Apple Adapter
27-inch iMac (Mid-2010)
27-inch iMac (Late 2009)
21.5-inch iMac (Late 2012) Limited Compatibility*
21.5-inch iMac (Mid, Late 2011)
21.5-inch iMac (Mid-2010)
21.5-inch iMac (Late 2009)

* Apple now offers iMac computers with built-in VESA interface. An iMac from late-2012 to present cannot be retrofitted to include a VESA interface—the built-in VESA interface is only available at the time of purchase.

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LX HD Sit-Stand Desk Mount Arm