This product is either discontinued or we cannot get that from suppliers.
ERGOTRON 97-906 WorkFit Single HD Monitor Kit, Up to 30" Screens, Up to 16-28 lbs, Easily lifts, Tilts and rotates, VESA MIS-D/E/F, Cable management, BLACK
Upgrade your WorkFit to hold a larger LCD above the desktop. Ergotron 97-906 offers 5" (13 cm) of height adjustment and tilt. Easily lift and tilt the screen to proper height for unsurpassed ergonomic comfort.
For use with WorkFit-T, WorkFit-TL and WorkFit-PD products.