Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Can this be used to support a bed slat roll?
Document: Bed was sagging in the middle because of our wooden boards bein used as support along the base of the frame. This metal frame substitute fixed the problem and we stopped the order on our new mattress.
It does the job, was fairly easy to assemble and will be durable. I noticed the difference in the bed with this support immediately, much better than the slats I used previously. Possibly over-priced, but I wanted to make sure I purchased a quality product.
We needed this to comply with the warranty requirements of our new bedding (requires center support for queen and larger). Our wood bed frame used four wood slats only, with no center support. This item was relatively easy to assemble, provides solid support and clearly makes the whole bed frame assembly into a solid-feeling piece of furniture. The only reason it's not a one-person job is that the mattress and box-spring are unwieldy for one person to handle.
This is a great, rock solid support system. It takes a little time to install it, but it's worth it. I had mine all laid out and set up before I started and drilling. A word of advice, if your bed rails are steel, make sure you invest in a good drill bit... I used a DeWALT 1/4 inch Pilot Point bit, for stainless and heavy steel, worked great. I highly recommend this support system, I don't think you could find any better.
The movers lost the support feet for our slats so we got this as a replacement. It is much more stable and much more supportive than the three soft wood slats with plastic feet that we had before moving.It's a set of 3 metal slats, adjustable width, with one foot per slat and 2 cross braces to attach the slats together. The metal slats consist of 2 L channel type pieces (with flat ends) with a clamping piece to hold them together.
This is easy enough to figure out by examining the components and using a measuring tape. We were able to accommodate one of the two cross braces, and chose to place it between the slats closer to the head and middle of the bed; the slat closer to the foot of the bed is not attached to the middle slat because the spacing is too close.4 stars because it didn't quite fit the geometry of my bed frame and I would have preferred more bolts.
Bought a sleigh bed without a frame. The frame was 3 times the bed cost, because we found the bed frame used.Feels great and worth it. All bed supports should be made this way. But I give it 4 stars because it's more expensive than I imagined.
I don't recommend this for king size beds or for beds that would required you to use the leg extensions. The clamping piece that's used after you spread the rails apart to fit your width of bed is not very strong. The bolt that's provided is cheaply made and you can't really tighten it without striping both male and female threads. My bed is 13 inches from floor to bottom of box springs. The legs & the leg extensions were unstable at my 13 inch needed height.
My mattress used to sag in the middle. Installed this unit and it feels like new again. Would highly recommend, especially if you are considering buying a new mattress. Get this first and it might fix your problems for a lot less money.
Took the place of the cheap slats that came with the wood bed frame, easy to install and great support.
Answer: Yes, as long as the outside bed frame can support the outsides of the slats.  This will add some extra strength to the middle part of the bed.