Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is the upper tier reversable (ie, to the left side)?
Document: This Lynk's organizer allows you to put the upper shelf on either side of the drawer, allowing you the flexbility to customize it to your particular needs. This is the second Lynk's product I have purchased. They are incredibly sturdy, well-bulit and easy to install.
Generally a good, functional, well-made product. The upper section fits well and is sturdy. It's reversible side/side, which is nice. I prefer full-length rails at the bottom (vs. the 'horseshoe' mounts on this), as they are stiffer/more sturdy, although not as easy to install. B,B &B's house brand has such heavier, stiffer rails.
I chose this roll-out for my under the sink cabinet to go along with a Lynk 1-tier roll out, so I do not have a problem as other reviewers did with the height of the upper shelf. It was very easy to install and works well--which is important to me because of neurological issues that make bending and reaching into the cabinet very difficult. It rolls out and back easilty--I can even pull it out with my toes.eas
I have a shallow bathroom sink cabinet. This was the only sturdy organizer I could find that would fit. Install was a breeze, can be installed on left or right side. Holds so much with the two shelves. Top shelf even has liner to hold the small stuff without falling through. The pull-out is smooth, wish it would pull out just a bit more but still worth the money.
(unlike some companies nowadays that don't include mounting hardware, making you go out and shop before making use of your purchase.) Oh - and you can install either right or left if you need to accommodate a garbage disposal or other plumbing device.
It's so easy to find what I need from under my bathroom sink. I liked it so much that my husband is going to install a 2nd one under the other side.
I may end up taking the upper shelf off (it just pushes down onto removable rods, so is easily removed) and live with less overall storage space for the sake of making the bottom shelf more useful.Bottom line:  If you have a very narrow tight space to work with, this may be the best option you're going to find for rolling under-cabinet shelving. It's not perfect, but it's far better than having nothing at all.
I don't understand how this has so many good reviews. It's nice to have a sliding drawer that has a higher shelf attached to the side, narrow to miss some pipes. However, most bottles of cleaning chemicals and bottles of toilet cleaner will not fit underneath the higher shelf! Bad design!However, after purchasing some steel rods from the hardware store and then cutting them to the PROPER height, this will be fine.
The directions say to assemble the baskets, install the sliding rails in the cabinet, and then attach the basket to the rails. It sounds simple, but working inside a cabinet can be difficult. The directions indicated that high side of the baskets should be at least 2 inches from the side of the door, but I found that wasn't far enough. The top basket leaned outward slightly and rubbed against the side of the door opening.
Wish the manufacturer, Lynk, made a smaller (less wide, under 10") for bathroom vanities. I bought two units one for each side for under the kitchen sink. I chose the 18" so I could use a separate storage unit for the door (to hang the rolls of wax, foil and plastic wraps). My cabinets were deep enough for the 21" version. Easy to install, it took under 15 minutes.
Answer: According to the Lynk's website "Our innovative, reversible design works in	either the right or left side of your cabinet to fit easily into tight spaces."   http://www.lynkinc.com/kitchen.htm