Kitchen Niche Cabinets: Planning 15 cm and 20 cm Pull-Out Larder Units

A base unit pull-out larder turns narrow residual niches from a carcase width of 150 mm into fully usable storage with access from both sides. Kitchen planning often results in narrow gaps between standard carcases or at the end of a run. To equip these niche cabinets functionally, precisely matching the hardware specification to the internal clear width and intended load capacity is essential.

This guide is aimed at fitters and kitchen installers. It defines the technical parameters for narrow pull-out systems and shows how to marry fronts, runners, and carcases with millimetre precision.

Key Buying Criteria for Narrow Niche Pull-Outs

Choosing the right pull-out system is not based on visual preferences, but on hard installation dimensions and mechanical requirements. A poorly planned niche unit is like an overly tight gearbox housing – the mechanism binds and wear increases rapidly.

1. External Carcase Dimension vs Internal Clear Width

Manufacturer specifications usually refer to the external dimension of the cabinet. A pull-out for a 15 cm cabinet is therefore not 150 mm wide. The decisive factor for installation is the internal clear width (the internal dimension of the carcase). With typical chipboard at 16 mm thickness, a 150 mm carcase yields an internal width of 118 mm. With 19 mm thick side panels, the internal dimension reduces to 112 mm. The fitting must be designed for these tolerances. Pay attention to the specified minimum installation width (e.g. "from 110 mm internal clear width").

2. Runner Type and Extension Length

For niche cabinets, a full-extension runner is technically non-negotiable. Only when the basket can be pulled 100 % clear of the carcase is access to bottles or spice jars at the rear guaranteed. A single-extension runner would make reaching items in the rear third impossible given the narrow width of 150 mm or 200 mm. The runner tracks are usually mounted diagonally offset (one runner at the bottom left, one at the top right) or screwed to the carcase base as an undermount runner to maximise lateral stability. Typical nominal lengths for kitchen base units range from 450 mm - 500 mm.

3. Load Capacity and Kinematics

A fully loaded pull-out larder holding oil bottles, vinegar, and tinned food generates high dynamic loads and a strong tilting moment on the front. The ball-bearing runner must therefore have a load rating of at least 20 kg, preferably 30 kg. Take note of the static load capacity of the runners.

4. Soft-Close Damping

An integrated soft-close mechanism catches the mass of the loaded pull-out over the final few centimetres, drawing the front gently and silently against the carcase. This not only protects the material, but also prevents tall bottles in the basket from falling over. Do not confuse this with push-to-open – the latter pushes the handleless drawer open and cannot be combined with standard soft-close damping without a specialised hybrid mechanism.

Overview of Types and Dimensions

Different systems are used depending on the available niche. The baskets usually consist of chrome-plated steel wire or powder-coated flat bar with solid bases.

The 15 cm Pull-Out (Spices and Bottles)

The absolute minimum for a practical niche cabinet. A kitchen cabinet pull-out 15 cm generally offers two tiers. The lower tier is tall enough for standard oil bottles (approx. 300 mm clear height required), while the upper tier is suited to spice jars. Guidance is often provided by side-mounted telescopic runners.

The 20 cm Pull-Out (Towel Rail or Provisions)

With a carcase width of 200 mm, the options expand. A kitchen cabinet pull-out 20 cm offers sufficient internal width (approx. 162 mm - 168 mm) to accommodate wider food storage containers alongside bottles. Alternatively, dedicated pull-out towel rails featuring a single, side-mounted runner are often installed in 200 mm niches.

Wider Alternatives

If more space is available, you move beyond the classic niche category. A kitchen cabinet pull-out 30 cm is considered standard specification and is often planned with a front connection for heavy waste sorting systems or as a compact larder unit.

Which System for Which Application? (Decision Guide)

The choice of hardware depends on the exact niche width and the intended storage items:

• If the niche measures exactly 150 mm: Choose a 15 cm pull-out with asymmetrical side mounting. Use it for vinegar, oil, and spices. Ensure the fittings do not clash with the concealed cup hinges of adjacent cabinets.
• If the niche measures 200 mm: Opt for a 20 cm pull-out with base mounting. The undermount runner handles higher loads and prevents lateral swaying of the front at extension lengths from 500 mm.
• If the front is designed without handles: You will need a system with an ejection mechanism (push-to-open). Note that a release travel distance of approx. 2.5 mm to 3 mm between front and carcase must be planned.
• If you store heavy tinned goods: Ensure you select solid wooden bases or structured metal inserts in the basket. Pure wire mesh bases can cause small cans to tip and will sag under concentrated point loads.

Installation Advice for Fitters

Installing a narrow niche pull-out requires precision, as the space for retrospective adjustments inside the carcase is minimal.

Required Tools

• Cordless screwdriver
• Driver bits: PZ (Pozidriv) or TX (Torx), matching the screws
• Tape measure and try square
• Bradawl or 3 mm wood drill bit

Installation Steps

1. Position the runners: Mark the drilling points on the inside wall or floor of the carcase. If available, use the System 32 (drilling line with 32 mm spacing) to align the runners. The front edge of the runner is usually positioned flush 37 mm behind the front edge of the carcase.
2. Fixing: Secure the runners using suitable chipboard screws (e.g. 4 x 16 mm countersunk). Ensure that the screw heads sit completely flush, otherwise the running carriage of the ball-bearing runner will jam.
3. Insert the frame: Slide the supporting frame into the runners until the latch audibly engages.
4. Front attachment: Mount the front fixing brackets to the furniture front. Hook the front onto the frame.
5. 3D adjustment: Align the reveal gaps. High-quality hardware features adjustment screws for height adjustment (± 2 mm), side adjustment (± 1.5 mm), and tilt adjustment to correct any drooping of the front.

FAQ – Frequently Asked Questions About Niche Pull-Outs

What dimension do I need for a 15 cm niche cabinet?

The dimension "15 cm" refers to the external size of the timber carcase. The hardware itself is narrower. With a side wall thickness of 16 mm, the internal clear width is 118 mm. The pull-out basket typically measures between 105 mm and 112 mm in width to extend smoothly without contact.

Can I use a single-extension runner for a niche cabinet?

No, this is not technically recommended. In narrow cabinets (150 mm - 200 mm), you cannot reach items from the side if the basket remains partially inside the carcase. A full-extension runner is essential to make the entire content of the niche accessible.

What is the load capacity of a base unit pull-out larder?

High-quality fittings for niche units are rated for dynamic loads of 20 kg to 30 kg. This is more than adequate for a full load of glass bottles and food tins across two tiers.

Can the front still be adjusted after installation?

Yes. The front fixing brackets of the pull-out system feature integrated 3D adjustment. Using eccentric screws, you can adjust the front vertically, laterally, and in tilt to create exact reveals against adjacent units.

Can I combine push-to-open and soft-close?

As standard, these two mechanisms are mutually exclusive. Soft-close brakes and draws the unit closed, whereas push-to-open tensions a spring to push it out. For handleless kitchens, dedicated hybrid systems exist, but for standard niche pull-outs you must decide on one of the two mechanisms.

Matching Components for Kitchen Installation

To complete the kitchen layout and integrate the niche cabinet seamlessly into the overall scheme, you often need additional fittings and organisation systems alongside the main pull-out hardware.

• Discover the full spectrum of storage solutions in the kitchen cabinet pull-outs range.
• For structuring wider drawers adjacent to the niche cabinet, a suitable kitchen drawer organiser is indispensable.
• The visual finish on the front is provided by the right kitchen furniture handles, which should be coordinated with the rest of the kitchen run.