A:AnswerI would check with the manufacturer if they can sell you brackets. If it is still under warranty they should be able to send you replacement brackets. I found this on their website. "Not all items have additional accessories or can be purchased as parts. However, you can contact customer service for replacement part or hardware requests."
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A:AnswerThere is some adjustment either up or down it just depends how much you need there are 4 bracket thst hold the tray they do adjust and it is sturdy
A:AnswerHello Customer,
Great question, the brackets on their respective side are placed 11.9" apart with the screw holes sitting at 10.5" apart. The overall length of the unit is 21" with the depth/width being 17".
A:AnswerYes, it does come with screws. They are about 3/4 inch long (I don't remember the exact length but they do not all the way through the desk top which is 1 1/4 inches thick).