Black Under Desk Keyboard Tray with Spacer Brackets

I like the assembly I just don’t like that there is a lot of play up and down and side to side and I see no way of adjusting that out of it. For what this thing costs, I must say I’m not impressed

We installed on a desk with a lip blocking the front so we purchased with the spacer and it worked perfect for our needs. Positioning to use the keyboard greatly improved my working space and I'm not even using the ability to move from side to side. Nice to know it is there.

I installed this tray on a repurposed wood kitchen table. Because of the 2-5/8th-inch thick crosspiece of wood under the table top I also ordered the spacer kit. My table top is solid wood - I would not recommend installing this tray into a particle board desk top because of the weight of this tray and any stress you might put on it.Measure carefully before you install the tray so that it extends and retracts to where you want it. I installed my tray so it still sticks out 1-inch beyond the table top edge even when fully retracted so that it's easier to grab. Thus for me the forward edge of the spacer bracket is 2-7/8-inches back from the front edge of my table.I centered my tray on my table and also centered it on my computer. As you can see from the first photo an Apple wireless keyboard and mouse fit easily on the tray. I alternate them from side to side to vary the stress on my wrists. I ran a cord through the frame so that my wireless keyboard is always charged.If the lever to lock the sliding frame into place sticks down and jabs your leg you can remove the screw holding the lever in place, take the lever off, rotate the lever to a different angle, and reinstall and tighten the screw.I prefer to leave the tray in the extended position all of the time so that I don't have to readjust it each time. You can't keep the same tray angle locked in when extending and retracting it - the lock lever unlocks both the in-and-out motion and the tray angle. Also be aware the this tray can freely rotate left and right during use - there is no locking mechanism for this movement.BE WARNED that when you extend and retract the tray that you can scrape it against the metal frame and damage the tray finish. You need to take into account both the drop of the tray and the tray angle when sliding it in and out.This tray can be adjusted for both positive, negative or neutral cant, which I found to be a great feature for finding the best angle for minimizing wrist discomfort. I have my tray adjusted so that it rests on my upper legs while typing. There is about about 3/8-inch of up and down play when the tray is locked so I can slide my chair and legs into position fairly easily.The included wrist rest was awful. You can see that it has a rectangular honeycomb structure. There is flex where the honeycomb structure is absent, but anywhere close to the structure there is no give, which is very uncomfortable on your wrists. Also, the adhesive bottom can only be pressed onto the tray where the honeycomb structure is present, leaving 95% of the adhesive not secured to the tray. Lastly, the surface finish of the wrist rest attracts dust and skin cells which are difficult to remove even with a wet micro-fiber cloth. I replaced the included wrist wrest with a Fellowes Memory Foam Wrist Rest, Black (91782), which is a huge improvement in comfort. It stays in place without needing adhesive.For all of its features and the drop-down spacer option, I found this to be the best keyboard tray for me, and was $100 to $150 cheaper than other trays with comparable features.As long as you have a solid place to mount this tray and are a fairly competent do-it-yourselfer I would highly recommend this keyboard tray.Also, $70 to $100 is not much to pay in order to prevent carpal tunnel or pinched ulnar nerves.

I added the Vivo adjustable keyboard tray with spacer brackets (MOUNT-KB03B-KIT1) to my Vivo electric desk frame (DESK-V102E) and 60 X 40 table top (DESK-TOP60D). The tray and spacer brackets ($75) came together as a kit. The spacers were necessary, because the desk frame has a cross bar and a rod from the motor to the opposite leg, which both span the the entire underside of the top from leg to leg. Mounting the tray without spacers would not have been possible. I considered making my own spacers, but the kit saved me the time and hassle. With the spacers attached to the tray guide, it is not the easiest to mount. The guide unit is quite heavy, so you will another set of hands to install it. I like the adjust-ability of the unit, and the tray can be swiveled nearly 360 degrees. I did not install the wrist rest in order to make room for a small mouse pad. If you are considering this type of tray, I recommend getting the kit instead of buying the tray and spacers separately. It's more convenient and cheaper too!

This is a good product, but there's just some caveats that you should take into consideration when purchasing this. The entire installation setup is HEAVY, so try to have a stool or a second person to help you drill pilot holes and hold up the unit. I had to get the space brackets since I have a standing desk and it lowers it so much that you'll constantly knock your knee if you have your desk at a lower position. I'm not sure why the length for the space brackets are so low. The straw that really broke the camels back and made me ultimately return the product was that the actual keyboard unit was cheap and after installation it was lopsided for some reason on the left side. I'm not sure if it was the entire unit itself that wasn't centered but it drove me insane that I had spent all this time installing and then it was lopsided. I kept trying to use it but felt that it was faulty in the end for the price.