A base labelled “22 × 30” does not necessarily support a 22 × 30-inch top, nor does that label tell you the largest top it can carry. It describes a base dimension. The acceptable top depends on the model, shape, weight and table height.
Start with the complete table you want to buy. Settle the top-and-base combination before ordering components from separate sellers. Two compatible-looking pieces can leave you with an unresolved mounting job or a table that crowds the chairs.
Read the top limit separately from the footprint
On a base specification, distinguish three things: the dimensions at floor level, the mounting plate beneath the top, and the permitted tabletop. A photograph can make the plate and footprint look similar; they perform different jobs.
The FLAT KX2230 EQ product sheet illustrates the distinction. Its CT2062 model has a published 22 × 30-inch base span and a 13-inch top plate. The listed maximum top is 750 × 900 mm, with a maximum tabletop weight of 16 kg. Buying by the largest number in the model name would miss two limits that matter to the order.
Suppliers also use terms such as span, spread, diameter and footprint differently. Ask for a dimensioned drawing if the label does not show where the measurement starts and ends. For a cross base, a diagonal or leg-tip measurement does not describe the whole area between the legs.
The same size label can cover different tops
These manufacturer examples show why a generic base-to-top ratio is a poor buying shortcut. They are examples of published limits, not recommendations for an unidentified table.
| Model with a 22 × 30-inch base label | Published maximum rectangular or oval top | Published maximum top weight |
|---|---|---|
| FLAT KX2230 EQ, CT2062 | 750 × 900 mm | 16 kg |
| NOROCK Trail 22×30 | 700 × 1220 mm | 30 kg |
The first row comes from FLAT's model specification. The second comes from NOROCK's rectangular and oval top guidance. NOROCK published that article in September 2023; request the current sheet for the height and finish being quoted.
The NOROCK example permits a longer top but a narrower one. Neither manufacturer's limits transfer to another brand merely because its base has the same labelled span. Meeting the size limit also does not establish that the weight limit has been met.
Keep the manufacturer's units when comparing the sheets. Rounded inch labels and metric dimensions may appear together; use the supplier's approved drawing for the actual top rather than assuming the printed equivalents are exact conversions.
Describe the top the base will actually receive
Send the supplier the top's shape, dimensions, material, thickness and weight, including any backing or reinforcement supplied with it. State whether it has an apron or other structure below the dining surface.
For a custom top, get the weight from the fabricator. A finish name such as “stone look” tells you little about the complete construction. Conversely, a stone top of familiar dimensions can have a different weight when its thickness or backing changes.
Ask for approval of the proposed shape. A permitted round diameter is not an allowance for a square of the same width. A long rectangle also needs an approved support arrangement along its length. The supplier should identify whether the quote uses one base, a linked frame or multiple supports, and show their positions.
This is where support and stability need separate answers. A component's vertical load claim does not describe how the assembled table behaves when weight is placed near an edge. Resolve that question through the manufacturer's configuration approval, rather than an improvised leaning or overload test.
Include the finished height in the compatibility check
Specify the required dining, counter or bar height before comparing bases. Then check how the top thickness, mounting assembly and glides contribute to the finished table height. The column height alone is not the dining surface height.
FLAT's EQ specification sheet lists different permitted tops for dining, counter and bar versions of the same base family. An approval for a dining-height version should therefore not be carried over to a taller version by name alone.
If two table types will be pushed together, compare their completed heights, edges and floor adjustments. Matching catalogue column heights does not establish a flush joined surface.
Settle the attachment before the order
Ask the top supplier and base supplier who approves the assembled combination. The answer should name the top, base, mounting parts and drawing or instruction revision. Two separate assurances that each component is suitable do not settle whether they work together.
Include the mounting plate, any backing or reinforcement, hardware and assembly labor in the quote. With a fabricated top, confirm whether attachment points are prepared before delivery and who supplies their layout. Do not choose drilling patterns or screw lengths from a photograph.
If a table is fixed to the floor, assign the site and fixing review to the responsible installer or designer. A bolt-down option introduces a floor connection; it is not simply a way to make an unsuitable freestanding combination acceptable.
Check the chairs around the approved assembly
Review one assembled sample or a dimensioned layout with the chairs and booth arrangement you intend to use. The purpose is to find everyday fit problems: feet landing on a disc, chair legs striking a cross base, or a support blocking the path into a booth.
Compare these arrangements separately:
- A small square table used on its own.
- Tables joined for larger parties, with supports close to the meeting edges.
- A rectangular table beside fixed seating, where people enter from one end.
For an accessible dining position, have the underside, base and approach reviewed together against the requirements that apply to the project. Overall table height or a base's marketing label cannot establish usable knee and toe space.
Ask how the floor-contact parts are adjusted and replaced. A worn glide, uneven floor and loose attachment are different problems; choosing a heavier top is not a diagnosis. For outdoor use, confirm the complete configuration's intended exposure, including the attachments and floor-contact parts.
Keep the approval tied to the quoted table
In the furniture planner, connect each top to its proposed base rather than listing them as unrelated quantities. Keep the approved configuration, finished height, attachment scope and supplier confirmation with that table type.
A substitution in top material, size, base model or height reopens the compatibility decision. Check the delivered model and mounting parts against the accepted quote before assembly.
If you are retaining existing bases, start with the replacement top guide. That decision begins with identifying and assessing what you already own; this one begins with selecting an approved complete assembly.