BIGTEDDY - 4" Adjustable Blind Shelf Floating Support Invisible Brackets, Concealed Mount for Home Wall DIY, Silver (Packs of 8)

This is a thoroughly engineered, high quality, versatile product. It has a way to adjust the angle of the shelf, the shaft is more than sufficient with the 4” rods and has a way to lock the shelf in place. CAUTION, if you’re a normal handy guy with an adequate, but not really professional workbench, THIS PRODUCT IS NOT FOR YOU. I am not a professional cabinetmaker or any kind of wood worker, but as a hobby I have a fully equipped cabinet making shop. In order to do this right you will need a router table, the proper bit, at least a 1” thick shelf, and other tools that most DYI people don’t have. However, if you have that stuff, this product is really good. If not and you want to have it installed, hire someone that knows how to do it. That’s just my opinion, I could be wrong.

I used these to install a set of floating shelves above a wet bar to hold glassware. The hardware does what it promises, and supports a reasonable load. That said, some installer skill and common sense is required to maximize the benefit.DO NOT mount these in just drywall, no matter what type of anchor you use. At least one screw MUST go into a stud. My shelves were 1" thick, and even with mounting both screws in nailers supplied by my contractor, the bottom edge tended to crush the drywall and cause the shelf to sag. I worked around this by driving additional screws into the wood flush with the surface of the drywall prior to installation, so the lower edge of the hardware rested on the screw heads.Use a drill press and/or appropriate fixtures to ensure the holes are drilled straight. A mortise is required to fully conceal the hardware. This requires proper jigs and/or fixtures, but is not beyond the reach of a competent woodworker.

So I very rarely ever leave a product review, but this is one of those times that I will for the greater good. Bottom line:Do these support floating shelves - YESAre they sturdy - YES (If properly installed mostly yes, be conservative about number of brackets to use)Would these work in studs - YESDo these work in concrete, brick, and mortar -- WAIT A MINUTE, let's park it right here.I bought these for installing a 60" long by 4" deep by 8" wide pine mantel on our brick fireplace. Mantel is about 40 pounds. Let me explain myself first, I'm Jimmy around here. You know the "Jimmy" in your neighborhood that replaces your hot water heater for free, works with you to build a deck on the weekends, or gut and reno a room because I'm a good neighbor. I spent years doing complete gut/reno on multiple fix/flips and I am by no means a noob when it comes to home improvements. I expected to have to router the back of my mantel to create a space for the brackets, etc, etc.I bought these because they were cheaper than buying a Sheppard bracket -- I know better, but every once in a while I decide to go the cheap route and almost always regret my decision. They arrived and I was underwhelmed by the size, sturdiness, and adjustability (which adds to the sturdiness issue). I did some initial testing on some scrap and decided that while they were sturdier than they looked, but that I should probably use 5 for my application.I measured the holes in the bracket, determined I could use a 5/16 thread at most. Knowing I was mounting these on brick, I ran to the orange big box store to get some expansion anchors. I took my time, measured both ends of the project, drilled into the brick and the mantel (I recommend a Forstner bit here BTW, it makes a beautifully clean hole that slides on the post like silk). My problems began when I went to mount the brackets on the expansion anchor -- it is quite literally 1/8 tolerance shy on all sides of the nut from being able to get a socket on it for tightening. The bracket material is incredibly close to the nut. I had to sit with the smallest crescent wrench I have and gradually tighten the nut -- it took forever, and only because I put Loctite on the threads, do I feel like these are snug enough to withstand any seasonal expansion/loosening.If the person who designed these had actually tried them on brick/concrete, then they would have run into the same problem and redesigned it. You would ALWAYS use something like an expansion anchor for my application resulting in some kind of hex termination to tighten. Frankly, if I was putting these in a wood stud, I would want a hex bolt that allowed me the same feedback through a socket wrench to understand grip -- again that would be a no-go because of clearance.Verdict after installation -- it works. ALTHOUGH, I have 2" of material on the bottom of the mantel in full contact with the wall that helps with any tendency of lean down from the weight of the shelf. I wouldn't trust these on any thin shelves for stability. At the end of the day, if this fails over time, I will take it down and replace with a Sheppard bracket (that would have cost more but given me back 1.5hrs of my life). No problem though because I'm Jimmy. If you're not a Jimmy, than buyer beware.

These brackets are great. I bought a box of 8 and am holding up an 8ft long 2x6 of pine as my shelf with only 4 brackets. I intend to use the other 4 on another shelf I plan on putting up next wk. Love the fact that they are adjustable up/down and left/right. Makes installation a breeze. I wil say that having access to a drill press to drill the holes in the back of the shelf will prob work out better than using a handheld drill but since the rods are adjustable, its prob not that big of a deal, just easier. If you're thinking of getting these, do it. You won't be dissapointed. Just remember if you want the shelf you're mounting to sit tight against the wall, then you will have to notch out back of shelf for the bracket assembly to sit in. Not a big deal though. I just notched mine out with a table saw. My shelf seems sturdy and shows no signs of ever falling off. Great product.

These shelf supports are ok, but you need to really think about the weight you will be hanging.I hung 2 56" 2x10 pieces of solid walnut, and while shelves feel secure, there is a little bit of bounce. I think some of this bounce is coming from flex in the bracket itself.Pros: I really like that they are adjustable in so many different ways. As an amateur wood worker, I am bound to make a measurement mistake somewhere and these brackets still let me hang the shelves level without having to go redo a bunch of stuff. There are a lot of little adjustments that make it easy to use.Cons:They are a little less sturdy that I would have liked. While they hold strong to the wall, there is a little bit of flex in thr bracket itself, which will allow really heavy shelves to bounce. Also, the anchors that come with the brackets are absolutely terrible. Do not use under any circumstance.Next time, I may buy these for smaller shelves, and use the solid cold rolled steel ones for larger, heavier shelves.

This doesn't sit flush against the wall. As such, it defeats the purpose of the floating shelf if you are putting items on it like books. They are really sturdy and can hold a lot of material. It just wouldn't work unless the design was changed to remove the spring loaded contraption in the middle of it.