What Is Cabinet Concealment Mechanics? (Magnetic Catches)
A magnetic catch is a small cabinet fitting that uses magnetic attraction to hold a closed door against its frame. The magnet and metal keeper must align, and the hardware must suit the door and mounting surface. It can reduce visible latching hardware, but it is not a lock, safety restraint, or substitute for required service access.
Imagine adding a flush cabinet door beside a utility area. You want it to sit neatly closed, with no obvious latch, but you also need it to open cleanly and leave required equipment access unobstructed. The catch is only one part of that job. Door weight, hinge position, mounting strength, and nearby services all affect the result.
Planning the Catch and Cabinet
A magnetic catch works by attracting a metal keeper fixed to the door or frame. That force holds the door shut until someone pulls it open. Reliable operation depends on the catch maker’s rated application, a firm mounting surface, and correct alignment, not on magnet size alone.
Before buying hardware, note the door’s width, height, approximate mass, thickness, hinge type, and material. Check whether the catch will screw into solid wood, a face frame, or a thin panel. A screw that holds well in solid wood may not hold securely in a thin or brittle substrate.
Choose a catch whose published data covers the door and use. Catch force, allowable door mass, screw size, and installation gap vary by model. Do not estimate capacity from the visible magnet, and do not assume that two catches automatically provide a safe or suitable holding force. Follow the manufacturer’s instructions and use the specified fasteners.
ANSI/BHMA A156.9 is a cabinet-hardware standard that may help identify applicable hardware classifications. It does not set one universal magnetic-catch holding force or installation gap. Treat product instructions and model-specific data as the source for those values.
A catch holds a door closed; it does not secure it against forced entry or prevent access by a child. It also cannot replace latching hardware required by a particular cabinet or building condition. If the cabinet is part of a regulated assembly or contains equipment that must remain accessible, check the applicable requirements before adding a door.
Planning checklist
- Record door dimensions, material, and approximate mass.
- Identify the hinge type and available mounting surface.
- Check the catch maker’s rating and installation diagram.
- Locate wires, pipes, vents, service panels, and rated construction before drilling.
- Confirm that the proposed cabinet will not block required access.
The key decision is not “Which magnet is strongest?” It is “Which listed or specified catch fits this door, surface, and location?”
Checking Door Swing, Service Access, and Clearances
A cabinet door must close without binding and open without blocking required service access. Before installing a concealed or flush-looking panel, check the full door swing and the space around any electrical equipment, shutoffs, vents, or rated construction. Local rules and the adopted code edition may affect what is allowed.
For electrical equipment, NEC 110.26 sets working-space requirements. Under 110.26(A)(2), width must be at least 30 inches (762 mm) or the equipment width, whichever is greater. Under 110.26(A)(3), required height is at least 6 feet 6 inches (1.98 m), measured from the floor or platform.
Depth under NEC 110.26(A)(1) depends on voltage and exposure conditions. For typical 120/240 V equipment, 3 feet (914 mm) applies under Condition 1. Other conditions can require different depth. Confirm the applicable table condition and the locally adopted NEC edition with the authority having jurisdiction (AHJ).
The 30-inch width is not permission to put a door or obstruction inside the required working space. Keep cabinet faces and door positions from encroaching on that space, and do not hide a panel or shutoff behind a cabinet door. If the layout is close, get a qualified electrician or the AHJ to review it before construction.
Also check for required ventilation openings and access to plumbing or other service points. Do not cover a vent or make a service connection hard to reach. Where a wall or cabinet is part of a fire-rated assembly, do not cut or alter it unless the proposed work is allowed and properly detailed.
A simple survey helps prevent costly rework:
- Mark the cabinet’s proposed front and sides on the floor or wall.
- Open the door through its full swing and note where the edge travels.
- Compare the cabinet and swing with the equipment’s required work area.
- Check the wall and cabinet for known utilities before drilling.
- Ask a qualified trade or the AHJ when clearance or assembly status is uncertain.
Plan the door as part of the room, not just as a panel on a cabinet.
Mounting the Catch and Keeper
The catch is the magnet assembly; the keeper is the metal plate or piece it attracts. Mount them on rigid, flat surfaces so their faces meet in the position shown by the manufacturer. Correct placement lets the catch engage without forcing the hinges, bowing the door, or relying on a loose panel.
Start by installing or adjusting the hinges so the door sits square and closes freely. Then use the catch maker’s template, dimensions, and fastener specifications. A magnetic catch cannot correct a sagging door or a twisted cabinet opening. Fix those conditions first.
Place the catch and keeper where the instructions indicate, often near the meeting edge of the door, while allowing for the actual frame layout. Do not assume that a centerline or setback from another product will work. Mark the screw locations, check for hidden utilities, and confirm that each screw has adequate support in the substrate.
Use the specified screws and pilot-hole size. If the maker permits alternate fasteners for a particular material, follow that guidance. Avoid overtightening: it can strip the mounting surface or distort a plastic catch. For a thin panel, use only a mounting method suited to that panel and the catch maker’s instructions.
Close the door gently to check the first engagement. The keeper should meet the catch squarely, without a sideways slide that drags across the magnet or plate. If the catch has an adjustable keeper, make small changes within its designed range. Do not bend hardware or enlarge holes as a substitute for correcting the alignment.
| Check | Good result | If it fails |
|---|---|---|
| Mounting surface | Flat, firm, and supported | Reinforce or choose another approved location |
| Catch and keeper | Faces meet in the maker’s intended position | Recheck door position and template |
| Door movement | Closes without hinge strain or binding | Correct hinge or cabinet alignment |
| Fasteners | Specified size and secure purchase | Stop and use an approved mounting method |
The practical rule is simple: align the parts; do not use magnetic force to pull a poorly fitted door into place.
Verifying Engagement and Ongoing Access
A catch is properly installed when it engages as intended, the door opens without damage, and hardware stays secure through normal use. Testing also confirms that the cabinet does not interfere with service access or required ventilation. The manufacturer’s instructions set the product-specific limits; there is no universal test force or gap.
After installation, open and close the door repeatedly at a normal pace. Check that the keeper meets the catch each time, the door sits flush, and no part scrapes or binds. Inspect screws and mounting surfaces for movement. If the door needs a hard slam, fails to stay closed, or shifts the hinge, stop and correct the fit.
Test the adjustment with the door fully closed, then open it and inspect the catch and keeper. Make only the adjustments the product provides. Recheck fasteners after adjustment, and do not add a second catch unless the maker’s data and the door construction support that arrangement.
Confirm that the finished cabinet leaves required equipment and services accessible. For electrical equipment, keep NEC working space clear under the locally adopted rules. Verify that vents remain open and that any rated assembly has not been improperly altered. If a new obstruction or access concern appears, remove or redesign the cabinet rather than relying on a warning label.
A maintenance check is useful after the first period of regular use and whenever the door is adjusted or repaired. Look for loose screws, shifted keeper plates, damaged faces, or a change in how the door closes. A change in engagement can point to hinge wear, panel movement, or a loose mounting surface.
Typical Installation Scenarios
These examples are hypothetical, not code approvals or product ratings. They show how I would apply the same checks to different cabinet conditions: identify the door and substrate, follow the model instructions, then confirm that the finished door does not impair required access.
Face-frame storage cabinet: A homeowner wants a clean-looking door with no exposed pull. The frame provides a solid mounting area, and the door has ordinary hinges. I would select a catch rated for that door, install the keeper and catch using the supplied layout, then test for flush closure and free movement.
Thin cabinet panel: A builder has a lightweight panel with limited material behind the proposed screw locations. The catch may be suitable, but the mounting surface is the concern. I would check the maker’s fastener requirements and panel construction first. If the specified screws cannot hold securely, I would not rely on the catch until an approved mounting solution is in place.
Cabinet near an electrical panel: A remodel plan places a door close to electrical equipment. The hardware may fit, but that does not settle the layout. I would compare the cabinet and door position with NEC working-space requirements, including width, height, and applicable depth, then have a qualified electrician or AHJ resolve any uncertainty before installing it.
These cases have one shared lesson: hardware choice cannot make an unsuitable location compliant.
Conclusion and FAQ
A magnetic cabinet catch is a door-retention fitting, not a security device. Its performance depends on a suitable model, solid mounting, correct alignment, and a door that already fits its opening. Plan clearances first, install to the maker’s instructions, and test both engagement and continued access to services.
What does a magnetic cabinet catch do?
A magnetic catch uses a magnet and metal keeper to hold a cabinet door closed. The door opens when a person pulls it away from the catch. Its strength and fit depend on the specific model and installation.
Is a magnetic catch a lock?
No. A magnetic catch is not a lock or a security barrier. Do not use it to protect valuables, restrict access, or replace required latching hardware.
How do I choose the right catch?
Check the manufacturer’s published door or application rating, mounting details, fastener size, and installation instructions. There is no universal holding force or gap that applies to every catch.
Where should I mount the catch?
Use the location and layout shown in the product instructions. The catch and keeper need rigid, flat support and must align when the door closes. Avoid choosing a position that interferes with hinges, services, or required access.
Can a magnetic catch fix a sagging door?
No. Correct hinge adjustment, cabinet alignment, or door fit first. The catch should retain a properly fitted door, not pull a misaligned one into place.
How much gap should be between the catch and keeper?
There is no single gap for all products. Follow the catch maker’s stated dimensions or supplied template, and check that the faces engage without binding.
Can I install one on a thin panel?
Only if the catch instructions and panel construction allow secure fastening. If the specified screws cannot get proper support, use an approved mounting solution or select another suitable design.
Can a cabinet cover an electrical panel?
A cabinet must not obstruct required electrical working space or access. NEC 110.26 sets width, height, and depth rules; confirm the applicable conditions and locally adopted edition with a qualified electrician or AHJ.
What are the NEC working-space dimensions?
NEC 110.26(A)(2) requires at least 30 inches (762 mm) in width or the equipment width, whichever is greater. Section 110.26(A)(3) requires at least 6 feet 6 inches (1.98 m) in height. Depth depends on conditions under 110.26(A)(1).
How do I know the installation is sound?
The door should close smoothly, engage on each cycle, and remain aligned without forcing the hinges. Check fasteners and mounting surfaces for movement, and make sure the cabinet leaves required service access and ventilation clear.
(This article was written by one of our staff writers, Garrett Vance. Visit our Meet the Team page.)
