Sideboard 40 cm Deep — Which Alcove & What Fits Inside?

A sideboard with a depth of 40 cm provides sufficient storage space for lever arch files, folded clothes, or crockery without visually overwhelming narrow hallways or smaller rooms.

When planning the layout of a room, you often face the problem that deep cabinets take up too much walkway space, while very shallow furniture offers hardly any usable volume. The dimension of 40 cm has established itself as a functional standard in furniture construction. It bridges the gap between a compact footprint and practical usability. In this guide, we examine the concrete internal dimensions, suitable rooms, and what DIYers must keep in mind during assembly.

Dimensions and Suitability: What Fits in a 40 cm Depth?

When a piece of furniture is declared as 40 cm deep, this refers to the external dimension. To evaluate what fits inside, the internal dimension must be calculated. The back panel (usually a 3 mm thick HDF board) often sits a few millimetres inward, and the front thickness (typically 16 mm or 18 mm chipboard or MDF) must also be deducted. The resulting net internal dimension for furniture in this category is usually between 36 cm and 37 cm.

This dimension is designed for the following items:

• Lever arch files: A standard file is about 29 cm deep. It fits upright without issues, leaving enough room for door hinges.
• Clothing: Folded jumpers or T-shirts usually require a depth of 30 cm to 35 cm. They can be stacked neatly one behind the other in a 40 cm depth.
• Shoes: Shoe size 45 corresponds to a foot length of just under 29 cm. The shoe itself measures roughly 31 cm to 32 cm.
• Crockery: Large dinner plates have a diameter of 26 cm to 28 cm and can be placed securely on the shelves.

Anyone looking merely for space for paperbacks, DVDs, or slim decorative objects can opt for a chest of drawers depth 30 cm. For bulkier winter jackets or very large bedding sets, a deeper piece of furniture is often required. The chest of drawers depth 40 cm forms the exact sweet spot for everyday household items.

Room Solutions: Where a 40 cm Deep Sideboard Makes Sense

The choice of depth largely defines in which room the furniture functions best.

The Living Room

In living areas, sideboards frequently serve as a base for home entertainment electronics. A sideboard for television with a depth of 40 cm provides sufficient surface area for the feet of modern flat screens. Receivers, games consoles, or soundbars, which are typically between 25 cm and 30 cm deep, also find space on or inside the unit. In this case, the back panel should ideally feature cut-outs for cable routing.

The Bedroom

As a complement to a large wardrobe, a sideboard accommodates underwear, socks, or duvet covers. When space between the edge of the bed and the wall is limited, a moderate depth of 40 cm prevents the walkway from becoming a trip hazard. Anyone wishing to coordinate the room consistently to this dimension can also combine the sideboard with a wardrobe 40 cm deep.

The Hallway

Hallways in most floor plans have a long, narrow layout. A unit that is too deep quickly blocks the escape route or access to the front door. A 40 cm depth is sufficient to place shoes straight (not tilted as in dedicated shoe tippers) whilst sorting scarves or beanies into drawers.

Assembly and Hardware: What DIYers Need to Consider

Assembling a sideboard is like a mechanical puzzle – if the base is square and level, the fronts fit almost automatically. When assembling chests of drawers & sideboards yourself, you should pay attention to the quality and correct adjustment of furniture fittings.

Adjusting Hinges

The doors are generally fixed to the carcass side panels using a concealed cup hinge. The standard drilling diameter for the hinge cup in the door is 35 mm. On a classic sideboard with overlay doors, a full overlay hinge is used. Via the adjustment screws on the cruciform mounting plate, the door can be adjusted in three dimensions (height, depth, lateral overlay) until the reveal gaps are uniform.

Drawers and Runners

With a carcass depth of 40 cm, drawer runners with a nominal length of 350 mm are usually installed. A distinction is made between two types:

• A single extension runner can be pulled out of the carcass by approximately 75%. The rear section of the drawer remains inside the cabinet.
• A full extension runner allows the drawer to be pulled out 100%, vastly simplifying access to items stored right at the back.

Movement is guided either via side-mounted ball bearing runners or concealed undermount runners fitted beneath the drawer base.

Required Tools for Assembly

• Cordless screwdriver with bit set (usually PZ for chipboard screws)
• Wooden mallet (for wooden dowels)
• Screwdriver (for fine adjustment of hinges)
• Spirit level (to ensure level positioning)

Materials and Finishes

The visual impact of the sideboard depends heavily on the chosen surface finish. Most models consist of melamine-faced chipboard, which is scratch-resistant and easy to maintain. For modern, bright rooms, high gloss sideboards are suitable, as their reflective fronts visually enlarge the space. Those who prefer an industrial or minimalist style often choose a sideboard matt black. Such dark decor surfaces absorb light and create a strong contrast against white walls.

Frequently Asked Questions (FAQ)

How do I secure a 40 cm deep sideboard against tipping? As soon as a sideboard is fitted with drawers, the centre of gravity shifts forward when opened. It must be anchored to a solid wall using anti-tip brackets and wall plugs.

Which drawer runner size fits into a 40 cm deep sideboard? As a rule, runners with a length of 350 mm are used. Runners measuring 400 mm usually do not fit, because the back panel recess and front thickness must be deducted from the overall depth.

Is the depth sufficient for a printer? Compact inkjet printers for home use often measure between 30 cm and 35 cm in depth and fit onto the sideboard. Larger laser printers or multifunction devices with paper trays usually require a deeper surface.

What is System 32 in cabinet construction? System 32 is an international standard in furniture manufacturing. It describes a row of holes in the carcass side panels where the distance from hole centre to hole centre is exactly 32 mm. This is where shelf support studs are inserted.