Humanscale 6G 900 Series Keyboard Tray System with Left/Right 10" Mouse Pad

Description

"New Old Stock" Humanscale keyboard tray.
I have 3 of these; all were acquired from a business that shutdown. They are old but were never installed, so they are in essence "new". The boxes have a bit of wear on them so I am listing them as New-Open-Box.
(+I opened one (carefully!) to take measurements and pictures. )
The part number on the side is mysterious and doesn't correspond to advertised Humanscale numbering, but as near as I can tell, the systems are this (see link to Humanscale's website) or something nearly identical:
www.humanscale.com/products/keyboard-systems-configurator.cfm?configuration=6G90090HG22
The measurements I took are as follows:
Rail (to mount on the underside of a desk): 21+5/8" long (5+1/2" wide)Keyboard platform: 19+3/8" x 10+1/2"Mouse platform: 10" diameterThe mouse platform can clip either right-side or left-side, and can rise about 2-3"The box I opened had all the mounting screws included.
Note: I did notice that no instructions are provided but they are available online from Humanscale Inc.
******* IMPORTANT ******
DUE TO THE AGE OF THE ITEMS (and me not being an authorized Humanscale reseller), ALL SALES ARE FINAL - NO RETURNS/REFUNDS
HOWEVER, u
pon purchase, if the buyer requests it, I will gladly open the box to verify that all the parts are there and in good condition and send photo proof before I seal the box back up. If anything is damaged, I will gladly void the deal without penalty to you. (I will let me feedback record speak for my honesty)
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The boxes are about 18 lbs. , 24" x 17" x 5". You will pay actual shipping. If it turns out to be less than you got charged, I will refund the difference.
(
Also, please don't ask for different carriers/shipping methods. I am limited in what I can use.)