12" x 31-1/4" Harrison Hidden Countertop Support, Black Finish

Harrison Hidden Countertop Support For Floating Counters

Harrison hidden countertop support is an H shaped flat top plate designed to mount to the top of a knee wall, so it creates a floating counter appearance while structurally supporting a countertop overhang. The floating support arms sit flush with the top of a half wall, which lets the overhang bear directly on steel rather than on finished material. This 12 x 31.25 inch Federal Brace Harrison bracket is a workstation and countertop bracket with arms that support overhangs on both sides of a half wall, which allows one wall build to serve as a breakfast bar on one side and open storage or workspace on the other. A black powder coat finish provides a dark, uniform surface that visually disappears under most tops, helping the installation read as a clean floating counter rather than a bracketed build.

Key Harrison Hidden Support Details For Projects

• The Harrison Top Plate Hidden Countertop Support is an H shaped flat top plate, so it spans a knee wall and ties both sides of the overhang into a single steel component for consistent support.
• The floating support arms sit flush with the top of a half wall, so the countertop can rest directly on the arms and carry load without shims between bracket and substrate.
• This Harrison hidden countertop support has overall dimensions of 31.25 x 12 x 0.37 inch, so it offers a substantial footprint over the wall and a thick plate section for heavy-use tops.
• The arms on this 31.25 inch model are 14 inches on each side to support up to 18 inches of overhang, giving installers a clear guideline when laying out bar-depth or breakfast-bar projections.
• The middle bar of the bracket provides a 3.25 inch mounting plate area, concentrating fasteners along the wall centerline so the load transfers predictably into the framing.
• The bracket uses countersunk holes so the countertop will sit flush against the steel when installed, reducing telegraphing through solid surfaces and keeping scribe work to a minimum.

Installation Behavior Of The Harrison Top Plate Support

The Harrison Top Plate Hidden Countertop Support is designed to mount directly to the top of a knee wall, so it becomes part of the wall structure rather than a face-applied bracket. The 3.25 inch mounting plate area along the middle bar defines where fasteners land, which simplifies layout when working across multiple studs or a continuous cap. When installed per the installation guide, each Harrison bracket holds up to 375 lbs when installed touching side by side, so running brackets in a row across a half wall creates a continuous support line for heavy countertops and workstation loads. The countersunk holes keep fastener heads below the plate surface, so finished tops can be set directly on the steel top plate without interference at the mounting points.

Using This Workstation And Countertop Bracket In the Field

Where The Harrison Hidden Support Is Typically Used

The Harrison Top Plate Hidden Countertop Support is part of the workstation and countertop brackets class, so it is suited for countertop overhangs that need structural support without visible corbels. Its design to mount on top of a knee wall makes it useful wherever a half wall separates spaces and needs bar seating or work surface on one or both sides. The arms on this 31.25 x 12 x 0.37 inch model extend 14 inches to support up to 18 inches of overhang, so it aligns well with common bar-depth projections in kitchens and similar environments. Because the support arms sit flush with the top of the half wall, the countertop overhang on both sides can be laid out directly over the steel, supporting uses like extra eating space on one side and open storage or workstation access on the other.

Why Harrison Design Details Support Repeatable Results

The H shaped flat top plate form of the Harrison hidden countertop support ties both overhangs to a central spine, so load from either side of the half wall flows through a single steel path into the framing. The 3.25 inch mounting plate area along the middle bar localizes fastening, helping installers hit structural material consistently across multiple brackets for predictable performance. When installed per the installation guide, each bracket holding up to 375 lbs when installed touching side by side means that setting the brackets in a continuous row can carry substantial combined loads across a span. The black powder coat finish on the Harrison Top Plate Hidden Countertop Support creates a uniform dark surface that tends to recede behind most countertop materials, so the visual emphasis stays on the floating counter appearance rather than the support hardware. Countersunk holes bring screw heads below the plate surface, which allows the countertop to sit flush against the bracket and helps maintain an even finished plane across the full overhang.

Countertop Support Questions For Harrison Top Plate

Selecting This Harrison Support For Half Wall Overhangs

The Harrison hidden countertop support from Federal Brace in the 31.25 x 12 x 0.37 inch size gives installers an H shaped top plate that mounts directly to a knee wall and supports overhangs on both sides. With 14 inch arms rated to support up to 18 inches of overhang and a load capacity of up to 375 lbs per bracket when installed per the installation guide and touching side by side, it equips half walls to carry substantial bar or workstation loads. For projects calling for a floating counter look with black powder coated steel hidden under the top, this Harrison Top Plate Hidden Countertop Support aligns well with that installation approach.