The Humanscale 4GAD Adjustable Arm Mechanism for Keyboard Trays offers the same functionality of the Humanscale 4G mechanism except that it features a longer arm use so that the tray can be adjusted for use above the work surface.
We just received our order. I want to let you know that we are very impressed with the service we received from your company. Jon was very helpful and courteous and true to his word that we would get our order within 24 hours! Thank you, again.
- Susan Sternberg