Furniture Feet, Legs, and Levelers: Complete Guide

Most furniture foot problems start before anyone looks at a load rating. They start with vocabulary. A buyer asks a supplier for "feet", a supplier quotes "legs", the sample arrives as a "leveller", and by the time the discrepancy is discovered the cabinets are on the line and the base height is wrong by 15mm.

The industry uses at least six overlapping names for what the customer experiences as one thing — whatever holds the furniture off the floor. In English trade usage a foot may be the whole base assembly in one market and the small component at the bottom of a leg in another. Leg in US usage often means any support at all, including a 30mm steel pin. Leveller describes a function, not a shape. And plinth foot describes a position, not a part.

This guide treats the whole family as one system. It sets out what each component actually is, which of the three functions it performs — carry load, absorb height variation, protect the floor — and how to specify unambiguously even when you do not know what the part is called. It is written to be the entry point that routes you to the right detailed guide, rather than a fourth version of the height and load tables that already exist elsewhere on this site. It draws on 15 years of manufacturing feet, legs, and levellers for furniture producers across 40+ countries.

Adjustable and fixed feet, legs, and levellers range

Why the Vocabulary Fails You First

Every family in this category is described by a word that does not pin down a component. The same physical part is a "foot" to one factory, a "glide" to another, and a "base support" to a third.

The practical consequence: a purchase order written in this vocabulary is ambiguous, and the ambiguity is resolved by the supplier's assumption rather than by your intent. The fix is not to learn better words. It is to stop specifying by name and start specifying by interface, function, and constraint — covered later in this guide.

The Six Component Families

Everything in this category belongs to one of six families, and the families are distinguished by three things: what they attach to, whether they adjust, and what load path they create.

Two of these families create a bending load path and four do not, and that single distinction explains most field failures. A threaded leveller extended to the top of its range, or a slender structural leg, is a column under bending, and bending capacity falls much faster with length than compressive capacity does.

Technical specification comparison

These are working ranges for comparison, not ratings for any specific part. Load values assume a correctly installed part in its mid-range position, on a sound base panel. Load per point is the figure to use — dividing total furniture weight by the number of supports is the starting point, not the answer.

Glides, protective pads, and floor-protection hardware

Three Functions, Mapped

The families are easier to choose between once they are sorted by function instead of by name. Every component in this category performs some combination of three jobs — and the single most common specification error is assuming one component does all three.

Read the table by column, not by row. Almost every real specification needs two functions at once — typically "absorb floor variation" plus "protect the floor" — and the answer is usually a threaded leveller with a protective base, not a compromise between two separate parts. The rows that matter most are the cannot deliver entries, because those are the substitutions that fail.

Levelling range required, by floor condition

The last row is the one buyers resist. Beyond roughly 50mm the correct answer is to change the cabinet's construction — a separate base frame, a taller plinth, or a levelling batten — rather than to specify a longer thread. A 70mm leveller extended to 70mm is a slender column carrying the cabinet's load in bending, and its capacity at that extension is a fraction of its mid-range figure.

Corner plates, base frames, and mounting hardware

The Four Questions That Decide the Family

Before any catalogue is opened, four questions narrow the field to one or two families. Each has a wrong answer that eliminates options.

1. What does it attach to?

Base panel, corner plate, base frame, or an existing threaded insert. This is the most decisive question, because the interface eliminates families outright. A threaded leveller cannot be fitted to a base panel with no insert or boss; a structural leg cannot be fitted without a corner plate or frame.

2. How much load per point, and in which direction?

Load per point is total weight divided by the number of supports, adjusted for off-centre mass — usually 20-40% higher on the loaded supports. Direction matters more than magnitude: a compressive load and a bending load of the same size are not equivalent, and a tall or fully extended support is loaded in bending whether or not the designer intended it.

3. How much height variation must be absorbed?

This is a measured figure, taken across the actual floor run where the furniture will stand, not an assumed one. Measure the highest and lowest points across the full run and specify the range to cover it with the adjustment sitting in the middle of its travel. A leveller specified so that it can just reach the worst point has no margin and will be working at its weakest position.

4. What must be visible, and what must be protected?

A visible support is part of the design and is chosen for appearance; a concealed one is chosen for function. And the floor matters: a leveller with a 20mm base foot concentrates load into a small area, which is acceptable on tile and destructive on timber or resilient flooring. Load spreading comes from base area, not from material strength.

Specifying When You Do Not Know the Name

Because the vocabulary is unreliable, the reliable approach on a purchase order is to describe the part by its interface and constraints and let the supplier name it. This also removes the most common cause of wrong first samples.

The most valuable single line on a foot specification is the interface. A drawing that shows the base panel, the attachment method, the required floor-to-base height with its tolerance, and the load per point is unambiguous in any language and with any supplier. A name is not.

Where the Families Can Be Substituted

Substitution is routine in this category and is safe under specific conditions. Outside those conditions it produces the failures that generate returns.

The pattern across all six rows is the same: the substitution is safe when the discarded function was not actually needed. A leveller swapped for a leg is safe only if bending was never in the load path. A glide swapped for a foot is safe only if the load was light. The substitution decision is therefore a question about the original design's true requirements, not about the parts.

Engineered base and support assemblies

Common Specification Errors Across the Family

Which Detailed Guide to Read Next

This guide is deliberately a map rather than a duplicate. Each topic below is covered in depth in a dedicated article — go to the one that matches your question.

Where a detailed article and this guide appear to disagree on a number, the detailed article governs — it is measuring a specific part under specific conditions, while the ranges here exist to place the families in relation to one another.

Threaded inserts and sockets for leveller interfaces

Conclusion

The furniture foot category is a single system that has been fragmented by vocabulary. Six families, six names for the same three functions, and a purchase order that can be read at least two ways — which is why the same part is ordered twice and rejected once.

Key takeaways:

At Shaxi Hardware, feet, legs, levellers, plinth feet, glides, and casters are manufactured in our ISO 9001 certified facility, in zinc alloy, steel, stainless steel, PP and nylon, with documented load ratings tested in the intended base configuration, adjustment ranges within stated tolerance, and corrosion performance tested to EN 1670. Load testing follows ASTM protocols, and custom interfaces and base geometries are available through our OEM engineering service.

Send us your interface drawings and load per point

Additional Resources

• Adjustable and Fixed Feet, Legs, and Levellers
• Glides and Floor-Protection Hardware
• Corner Plates and Base Frames
• Support Interface Consultation
• ISO 9001 Manufacturing

About Shaxi Hardware

With over 15 years of experience manufacturing furniture hardware, Shaxi Hardware serves brands and manufacturers across 40+ countries. Our ISO 9001 certified production facility manufactures adjustable and fixed feet, threaded levellers, plinth feet, structural legs, glides, and casters, in zinc alloy, steel, stainless steel 304/316, PP, and nylon, with documented load ratings tested in the intended base configuration and corrosion performance tested to EN 1670. Load testing follows ASTM protocols, and custom interfaces, base geometries, and finishes are available through our OEM engineering service.

Learn more about Shaxi Hardware