How to Install a Cabinet: Essential Hardware Guide

August 25, 2026

Fitting storage units securely requires the right approach, patience, and purpose-designed fittings. Whether you are fitting out a utility room, upgrading a kitchen, or assembling fitted bedroom storage, understanding how to install a cabinet properly ensures the finished installation is level, safe, and built to last. Using dedicated furniture hardware eliminates guesswork and guarantees seamless alignment across multiple units.

Essential Hardware and Tools for the Job

Before you begin your cabinet install, make sure you have the correct fixings suited to your wall type and cabinetry design. The core hardware you will need includes:

Cabinet hanging brackets and plates: Concealed or internal brackets designed to suspend wall units securely.
Adjustable cabinet legs: Heavy-duty plastic or metal levelling feet that clip into baseplates on the underside of base carcasses.
Connecting bolts (inter-screws): Threaded male/female connectors used to pull neighbouring carcasses flush.
Wall fixings: Heavy-duty wall plugs and screws suitable for solid masonry, timber studs, or plasterboard cavities.
Spirit level and clamps: Essential tools to keep runs straight and hold units together while securing.

Step 1: Installing and Levelling Base Cabinets

Base units take substantial vertical loads and provide the foundation for worktops. To install cabinet bases accurately, start by surveying the floor for high points using a long spirit level.

Fit the adjustable legs: Push or screw the leg mounting plates into the pre-drilled holes on the base panel, typically spaced 50 mm to 70 mm from each corner. Push the leg shafts firmly into position.
Position the first carcass: Start with a corner unit or the carcass sitting at the highest point of the floor. Wind the legs up or down to bring the unit to your desired height and check level across both axes.
Join adjacent carcasses: Place the next unit in line, adjust its legs to match, and clamp the two face edges perfectly flush. Drill a 5 mm hole through the pre-marked system holes and secure using steel connecting bolts.
Fix to the wall: Secure the carcasses to the rear wall using small L-brackets and appropriate wall plugs to prevent tipping.

Step 2: Hanging Wall Cabinets Safely

Wall cupboards require specialised hanging brackets capable of bearing the combined weight of the unit and its contents. Modern concealed brackets allow fine adjustment after the cabinet is on the wall.

Marking and Fitting the Suspension Rail or Plates

Establish the bottom line of your wall units, usually around 450 mm to 500 mm above the base worktop level. Measure the internal offset to the bracket hooks, draw a level line across the wall, and screw heavy-duty steel hanging plates or continuous suspension rails directly into the wall framing or masonry.

Mounting and Adjusting the Carcass

Hang the unit onto the wall plates. Most cabinet hanging brackets feature two adjustment screws:

Height adjustment: Raises or lowers the unit slightly to level it with adjacent cupboards.
Depth adjustment: Draws the cabinet tighter against the wall to eliminate gaps.

Once all wall cupboards are hung and aligned, clamp the side panels together and fasten them with connecting bolts just as you did with the base units.

Step 3: Fitting Doors and Finishing Touches

With all carcasses rigid, level, and coupled together, you can fit the internal hardware and frontals. Clip 35 mm concealed hinges into place, adjust the hinge screws to achieve uniform gaps (reveals) between doors, and attach plinth clips onto the adjustable legs to snap the kickboards into place.

Frequently Asked Questions

Can I install a wall cabinet on plasterboard alone?

Standard plasterboard requires specialised heavy-duty cavity anchors, but for heavy wall units, it is always best practice to secure hanging plates directly into timber studs or install a continuous timber patress behind the board.

Why should I use connecting bolts instead of wood screws?

Connecting bolts (sleeve connectors) pass all the way through both panels, pulling the adjacent cabinet sides flat against each other without expanding or splitting the chipboard core.