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I-Semble Heavy-Duty Blind Shelf Supports
I-Semble Heavy-Duty Blind Shelf Supports Item #59434
In stock
$19.99 Pair
I-Semble Heavy-Duty Blind Shelf Supports 5 Pairs
I-Semble Heavy-Duty Blind Shelf Supports 5 Pairs Item #68181
In stock
$49.99 Kit

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I-Semble Heavy-Duty Blind Shelf Supports

Create shelves that appear to float on the wall—one pair supports up to 125 pounds!
Item #
74% of 100

Gain practical storage space while maintaining a clean, modern look. Once installed, these concealed shelf supports are completely hidden from view, creating the illusion of a floating shelf. They are made of sturdy metal with thick posts, and are securely screwed to wall studs for a weight capacity of up to 125 pounds per pair of supports. Shelves should be a minimum of 18'' long in order to span two studs. One pair of brackets can support a shelf up to 48'' long. If you need a longer shelf, just add additional brackets.


  • Height adjustment slots let you level the shelf if your initial holes are slightly off
  • Tilt adjustment screws ensure that the shelf projects from the wall at 90°
  • All hardware is provided, including mounting screws—you provide the wall space and the shelf
I-Semble Heavy-Duty Blind Shelf Supports
More Information
Brand I-Semble
Tech Spec
  • Support Arm Projection: 4-1/4'' (11 cm)
  • Support Arm Diameter: 9/16'' (14mm) nominal
  • Drill Bits Required: 21/64'' (Item #54702) for rear post; 9/16'' or 14mm (see Item #56029) for shelf post
  • Wall Bracket Dimensions: 11/16''H x 4''L x 1/2'' thick (total thickness with both front and rear brackets)
  • Minimum Shelf Thickness: 1'' (to entirely conceal the hardware)
  • Maximum Shelf Thickness: 1-1/4'' (shelf may be thicker, but thicker shelves will reduce weight capacity)
  • Minimum Shelf Length: 18'' (to span two studs)
  • Maximum Shelf Length: 48'' (using two supports; additional supports can be added for longer shelves)
  • Minimum Shelf Projection: 4-3/4'' (supports may be cut for shallower shelves)
  • Maximum Shelf Projection: 14''
  • Weight Capacity: 125 lbs/pair of supports
3.7 / 5.0
47 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
OWMBO Extremely Pleased
Had wife--one who must be obeyed--place painter's tape on wall exactly where she wanted shelves, three of them. Lived with the strips for about a week with minor adjustments of tape. Set level across each tape, marked studs, and used a center-punch to mark drill location. Noted distance between punches, and transferred to back of shelf board. Punched drill centers for back of shelf board. Electric drill with wood block to ensure hole in wall was perpendicular. Used drill press to drill 9/16" back of shelf holes.Used drill press to drill overlapping holes for the mortise with 3/4" Forstner bit, and chiseled sides flat. Inserted back plate in wall, marked for side holes, drilled and installed anchors--mostly these keep the bracket from turning, and hold it to wall when removing the shelf. They are not for strength, so drywall only does not matter. Loosely attached shelf brackets to back plate and slid the shelf onto the bracket about two inches, and then snugged the main bolts. Leveled the shelf left to right, then pushed shelf to about an inch from the wall, and using the supplied hex-wrenches, tightened the set-screws, a bit while easing the main-bolts to level the shelf front to back. I added a bit of front bias so items that wanted to travel would head toward the wall, and not over to the floor. Snugged everything up, and pushed shelves all the way to the wall. I believe this is a well-engineered kit, and provides a fair amount of adjustment. Mainly you want to ensure that you drill the shelf holes the same distance apart as the holes you drill in the studs. Don't assume 16" centers.
Shelf pulled away from wall. Make adjustments with hex wrenches on innermost bolts and set screws.
Mortised using drill press and smoothed with a chisel. The 9/16" hole fits shelf pin.
Back-edge of shelf flush to wall.
End-view of shelf to wall
Shelves as wife demanded
February 2, 2020
Woodworking Experience:
Minimum shelf length for heavy duty supports incorrect
The 18" minimum shelf length for the heavy duty supports should read 20" in my opinion. Compare the pictures of the brackets of the light and heavy duty and the heavy duty ones are wider as compared to the light duty. To be truthful if you want the brackets to not be visible at all I'd go 20 !/2" or the end of the mortises will be very close to the end of the shelf. So I need to modify or redo my shelves at present. The heavy-duty brackets seem to be very strong and well built with no bending or flexing apparent. Then again I have not installed them. Wanted to get the message out on the shelf length error.
May 21, 2019
Woodworking Experience:
Worst product ever
I purchased two sets of these heavy duty brackets. The support going into the wall was very tricky. There are two screws supplied that hook the bracket into the wall. Although the instructions call for drilling the stem into the stud, the spacing of the screw supports are 3" apart. This guarantees that the screws can only go into the Sheetrock! The location of the bar going into the shelf is very critical. Any mismatch to the separation will result in nothing fitting. Also there are adjustment screws for the alignment but it is hit or miss. You cannot adjust withe the shelf on so you have to repeatedly take the shelf off and on to correct. Since the fit is very tight there is no play for this type of adjustment. Also, the supports stand out approximately 3/8" requiring a motise to be made to hide the hardware. After mounting the first shelf, the second set has gone into the trash, It was not worth the effort to return it. I would give this product no stars if that was possible.
August 11, 2019
Woodworking Experience:
Not great
Not as strong as advertised, post that goes into stud can easily be bent by hand, in fact was bent out of package and way too easily bent it back, was actually concerned it would break off when I did so. The only mounting holes for screws into wall are beside the stud, not in it, so only actually mounted with drywall anchors... some side to side adjustability would be a good addition. Was frustrating to do all the work to mortise the shelves for them, just to get done and have floppy shelves. I'm a veteran finish carpenter/cabinet maker with many years experience with residential and commercial hardware.
User submitted image
Added Mar 29, 2019
March 29, 2019
Woodworking Experience:
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Browse 15 questions Browse 15 questions and 22 answers
how do i install this shelf support ?
Avraham S on Mar 18, 2019
BEST ANSWER: The installation instruction are in the "Technical Documents" section.
What is the required shelf depth?
SaraL. on Feb 1, 2020
BEST ANSWER: Shelf shouldn’t be more than 14” deep and no less than 5 5/8” deep.
Can these be used to mount a mantle on a brick fireplace?
Sarah N on Mar 29, 2020
BEST ANSWER: I would believe so, though I mounted mine onto a wood wall into the wall studs. You obviously would need a masonry drill bits to make the hole into brick. I suggest a modification to the installation instructions. If your finished mantle will be 9” wide, the start by making the rough mantle 11 or 12” wide. At this point drill the mounting holes into the mantle. No with a table saw rip to extra 1”-2” off of the mantle on the edge you drilled the mounting holes. This 1”-2” strip with the holes will be your template to drill holes in the wall at exactly the correct locations. Good luck.
How long is the rear peg support that goes into the stud?
GreenTree B on Mar 9, 2019
BEST ANSWER: The rear (wall) stud requires a mounting hole 12/32" x 3-1/8" deep.
What are the dimensions of the plate connected to the wall post?
Rick M on Feb 19, 2020
BEST ANSWER: 11/16''H x 4''L x 1/2'' thick (total thickness with both front and rear brackets)
Can these be used in a cinder block wall?
Gary W on Aug 28, 2019
BEST ANSWER: Not sure, I would use a sacrificial block to see what happens. If the post is not solidly in the cinder block, I think the shelf weight load would be limited.
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