How High Should a Wall Unit Be? Dimensions Guide

July 22, 2026

The overall height of a modular wall unit typically ranges between 160 cm and 220 cm, depending on the arrangement of the individual cabinets and wall-mounted elements.

When planning a living room layout, DIY enthusiasts often wonder at what height the various furniture modules should be installed. Unlike a solid, single-piece cabinet, a contemporary wall unit usually consists of several separate components. You determine the final height in the room yourself through their positioning on the wall.

Dimensions and Spacing for Installation

A typical combination consists of a lowboard for the television, a wall-mounted display cabinet or hanging cupboard, and a wall shelf. Planning the cabinet elements is like an analogue game of Tetris on the living room wall – every module requires the correct spacing to avoid looking overwhelming and to function properly.

The following guide values will help with alignment:

Lowboard height: Floor-standing models are usually 30 cm to 50 cm high. When wall-mounted, the unit is often fitted 15 cm to 20 cm above the floor.
TV position: The centre of the screen should sit at eye level when seated on the sofa. This generally corresponds to a height of 90 cm to 100 cm from the floor.
Gap between TV and wall cabinet: Allow at least 15 cm to 20 cm of clearance above the television. This not only makes swapping cables easier later on, but also ensures the necessary air circulation to prevent equipment from overheating.
Distance to the ceiling: There should be at least 30 cm of free space between the top edge of the highest cabinet and the room ceiling.

How to Choose the Right Cabinet Modules

The choice of furniture depends heavily on room size and wall construction. Anyone assembling and mounting the units themselves must verify the load-bearing capacity of the wall beforehand.

A wall-mounted living room unit requires solid masonry (concrete or brick) and the use of an impact drill. For plasterboard stud walls, specialised cavity fixings are essential, as the combination of chipboard or MDF and the eventual contents places significant weight onto the wall.

For small rooms with low ceilings, a white high-gloss living room unit is recommended. The reflective surfaces bounce light back into the room and make it feel visually larger. If the focus is on home entertainment, opt for a TV wall unit, which often includes an integrated cable grommet in the rear panel.

Solutions for Different Room Concepts

The arrangement and finish of the furniture alter the feel of the room considerably.

Sleek and open: A modern living room unit often does without bulky tall units. Instead, low-profile lines and asymmetrically arranged hanging elements dominate.
Natural look: To introduce warmth, choose a wooden wall unit or specifically an oak wall unit. Due to their texture, wood finishes conceal minor dust better than plain solid colours.
High-contrast accents: In large, bright rooms, a black wall unit sets a clear visual anchor point. Good room lighting is essential here so the dark front panels do not feel too heavy.

Tools for Assembly and Installation

For DIY furniture assembly and subsequent wall mounting, you will need a solid set of basic tools. Prepare a cordless screwdriver with suitable bits (usually PZ2 or TX20), a wooden mallet for wooden dowels, and a cross-head screwdriver for the fine adjustment of hinges.

For wall mounting, a spirit level, a folding rule or tape measure, a pencil, and a drill with the appropriate masonry or wood drill bit are necessary. Always ensure tall standing cabinets are secured to the wall using an anti-tip bracket.

Frequently Asked Questions (FAQ)

At what height should I mount a floating lowboard?

A floating TV unit is generally mounted so that its bottom edge sits around 15 cm to 20 cm above the floor. This facilitates floor cleaning and provides an ergonomic viewing height for the television.

Can I combine a wall unit with other cabinets in the same room?

Yes. In studio flats or open-plan living and dining areas, different functional furniture pieces are frequently combined. A wardrobe 180 high or separate high-gloss sideboards integrate well if you stick to the same colour palette or wood finish.

How much space do I need for cables behind the wall unit?

If the cabinets have solid back panels, allow around 3 cm to 5 cm of clearance from the wall if cables need to run behind them. Many modern TV units feature a recessed back panel specifically to create this cavity for extension leads and cable bundles.