Replacement Drawers for Mepla Kitchen Cabinets

A replacement drawer system must strictly adhere to the drilling grid of the cabinet carcase, typically System 32, as well as the internal cabinet width in millimetres.

When the moving parts in older kitchen cabinets wear out, sourcing exact original components is often difficult. Replacing defective units entirely with modern drawer systems is generally the neatest and most efficient technical solution. A suitable replacement for Mepla kitchens does not require identical parts from the original manufacturer, but rather components that are compatible with the existing cabinet dimensions and hole patterns. The cabinet carcase acts as a rigid base into which the new mechanical components must be accurately fitted.

Key Compatibility Considerations

To configure new runners to suit a Mepla kitchen, three technical parameters are decisive. Precise measurement of the existing cabinet is the primary requirement for straightforward installation.

• System 32: Most kitchen cabinets utilise this standardised grid system. The vertical distance between holes in the side panel is exactly 32 mm, with the setback from the front edge usually being 37 mm. New runners utilise these existing hole lines.
• Internal Carcase Width: This is the internal dimension of the cabinet between both side panels. The width of the new drawer must match this dimension precisely, minus the installation width of the chosen runners.
• Nominal Length: This refers to the length of the runner and the drawer side. Common lengths in kitchens range from 250 mm - 800 mm. For standard base units with an external depth of 600 mm, a nominal length of 500 mm is typically installed.

Matching Mechanical Components

When replacing drawer runners, various technical standards are available, differing in extension length, load capacity, and convenience features.

Extension Type and Load Capacity

The choice of runner determines how far the drawer box can be pulled out from the carcase. A full-extension runner extends by 100%, allowing access to the entire contents right up to the back panel. A partial-extension runner, on the other hand, exposes only around 75% of the interior space.

For replacements in kitchen units storing pans or heavy crockery, the load capacity in kilograms is crucial. Standard runners often support up to 30 kg. For wide pan drawers, using heavy-duty drawer runners rated for loads of 45 kg or more is recommended.

Motion Mechanisms

Modern runners feature integrated mechanisms to control closing motion.

• Soft-Close: An integrated damper absorbs the momentum of the closing drawer and pulls it in smoothly and quietly over the final centimetres. Soft-close drawer runners are standard in modern kitchens.
• Push-to-Open: This mechanism allows for handleless opening. Pressing the front releases a spring that pushes the drawer outward slightly.

These are opposing mechanisms. Damping brakes the closing action, whereas a push-release mechanism releases energy to open the drawer.

Installation and Retrofitting in Existing Carcases

Replacing old components with an alternative to Mepla systems requires basic DIY skills and precision.

Required Tools

• Cordless screwdriver
• Cross-head screwdriver bit PZ2
• Tape measure or folding rule
• Carpenter's square
• Bradawl or wood drill bit (5 mm)

Installation Steps

1. Dismantling: Remove the old drawers and unscrew the existing runners from the cabinet carcase.
2. Runner Installation: Position the new full-extension drawer runners on the side panels. Use the existing hole pattern of System 32. Fix the runners with suitable system screws (5 mm diameter) into the pre-drilled holes, or use chipboard screws (3.5 mm to 4 mm) if you need to mark new pilot holes.
3. Assembly: Assemble the new drawer box according to the instructions. With double-walled drawer side systems, the back panel and base (usually made of chipboard with a 16 mm thickness) are screwed together.
4. Front Panel Installation: Existing kitchen drawer fronts can generally be reused. The old front fixings must be dismantled and replaced with brackets from the new system. Ensure correct drilling dimensions for the new mounting clips.
5. Fine Adjustment: Hook the assembled drawer onto the runners. Use the integrated 3D adjustment (height, side, tilt) inside the drawer sides to ensure an even alignment across the fronts.

Following successful mechanical installation, the interior can be customised to the new dimensions using drawer accessories such as cutlery trays or a drawer anti-slip mat.

FAQ

Can I keep the existing wooden drawers and only replace the runners? This is possible provided the new runners match the exact construction of the old timber drawer. With older undermount runners, the thickness of the side panels (typically a maximum of 16 mm) and the clearance beneath the drawer base must meet the requirements of the new runner. Switching to a complete drawer box system is often more dimensionally precise.

What is the difference between roller runners and ball-bearing slides? A roller runner operates on plastic wheels and is usually designed as a partial-extension runner. It is simple to install but offers less lateral stability. A ball-bearing slide uses steel balls within a telescopic profile, offers higher load capacities, and is almost always manufactured as a full-extension runner.

How do I calculate the dimensions for the drawer base with a new drawer box system? The exact cutting dimensions for the base and back panel vary depending on the manufacturer of the drawer box system. The calculation formula is supplied with the respective system and is always based on the internal carcase width minus a set value (for example, internal width minus 75 mm).