Reference

Bathroom Vanity Terms Glossary

Vanity quotations are written in cabinet-shop language, and a buyer who reads a specification without it will agree to things they did not intend. This glossary covers the terms that appear most often in bathroom vanity drawings, quotations and packing lists, grouped by where they turn up.

A table of bathroom vanity model codes and dimensions

The short answer

Quick Reference

  • Carcass is the box; the doors and drawer fronts are separate items.
  • Stiles are vertical frame members; rails are horizontal ones.
  • Rough-in refers to the service positions before finishes are applied.
  • Supply scope is what is actually included, and it is a commercial term.
  • A cut-out is machined before delivery and cannot be altered on site.
A bathroom vanity shown as a complete wash-area product

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Why the Words Matter

Two suppliers quoting "a 900 mm vanity" can be quoting completely different things: one a cabinet only, the other a cabinet with a top, basin, tap, waste and mirror. The difference is not dishonesty, it is vocabulary, and it is resolved by using the terms precisely.

The glossary below is grouped the way a quotation is: the cabinet, the top and basin, installation, and the commercial terms that decide what is actually in the box.

  • Cabinet terms: the box and its parts
  • Top and basin terms: what sits on it
  • Installation terms: how it meets the building
  • Commercial terms: what is actually included

Cabinet Terms

A bathing area with a mirror cabinet and shower fittings

These describe the box itself and the parts that make it up.

TermMeaning
CarcassThe cabinet box: sides, top, bottom and back, without doors or fronts
StileA vertical member of a frame, on a door or a face frame
RailA horizontal member of a frame
PanelThe infill inside a frame, which floats rather than being glued
Face frameA frame applied to the front of the carcass that the doors close against
FramelessA carcass with no face frame, doors mounted directly to the sides
PlinthThe recessed base a floor-standing cabinet stands on
Toe kickThe recess at the base that lets you stand close to the cabinet
Drawer boxThe drawer itself, separate from the drawer front
RunnerThe mechanism a drawer slides on; full-extension means it opens completely
Soft closeA damper that stops a door or drawer slamming
ScribeA filler piece trimmed on site to close a gap against an uneven wall

Top and Basin Terms

An integrated basin and vanity top formed as one piece

These describe the working surface and how the bowl relates to it.

TermMeaning
Vanity topThe countertop, supplied with or without a basin
Integrated basinA bowl formed as one piece with the top, with no joint
UndermountA bowl fixed beneath the top, so the top surface runs to the opening
Drop-inA bowl set into a hole with its rim resting on the top
VesselA bowl standing entirely on top of the counter
Cut-outA machined opening in the top for a basin, tap or waste
Tap holeA drilled hole for the tap; count and spacing must be specified
OverflowA secondary outlet near the rim; determines the waste type required
Slotted wasteA waste for a basin with an overflow; unslotted for one without
UpstandA raised lip at the back of the top against the wall
Coved upstandAn upstand curved into the top with no corner joint
OverhangHow far the top projects beyond the cabinet front

Installation Terms

A white wall-mounted vanity with a tall basin tap

These describe how the vanity meets the building, and they are where most site problems originate.

TermMeaning
Rough-inService positions set out before finishes; the dimensions the vanity must suit
Finished floor levelThe floor after tiling; the datum heights should reference
NogginTimber blocking in a stud wall that a wall-hung cabinet fixes into
Backing plateA plate or rail spreading the load of a wall-hung cabinet
Bottle trapA compact trap; positioned high it protects drawer space
P-trapA conventional trap; sits lower and occupies more of the cabinet
Clear floor spaceThe unobstructed floor in front of the vanity
FillerA piece closing a gap between the cabinet and a wall
Setting outMarking positions on site before installation begins

Commercial and Order Terms

A table of bathroom vanity model codes and dimensions

These decide what is actually in the shipment, and they are the terms most worth reading carefully.

TermMeaning
Supply scopeExactly which items are included in the quoted price
Component listAn itemized breakdown of what ships, unit by unit
Approved drawingThe drawing signed off by the buyer that production works to
Reference sampleA physical sample agreed as the standard for color and finish
Made to sizeProduced to your dimensions rather than a catalog size
Knock-downShipped flat for assembly on site rather than assembled
Carton dimensionsPacked size, which governs the delivery route, not the product size
Emission classThe formaldehyde classification of panel products used

Of these, supply scope causes more disputes than everything else combined. A photograph of a styled bathroom is not a supply scope, and the taps, mirror and accessories visible in it are not included unless a component list says they are.

Common questions

Terminology Questions

What is a cabinet carcass?

The box itself: sides, top, bottom and back, without doors or drawer fronts. A quotation for a carcass is not a quotation for a finished vanity, and the difference is substantial.

What is the difference between a stile and a rail?

A stile is a vertical frame member and a rail is a horizontal one. In a frame-and-panel door the stiles and rails form the frame and the panel floats inside it.

What does rough-in mean?

The service positions set out before finishes are applied. The vanity has to suit those dimensions, which is why they should be sent with the enquiry rather than measured after the cabinet arrives.

What is supply scope?

Exactly which items are included in the quoted price. It is the single most common source of disputes, because a styled product photograph shows taps, mirrors and accessories that are usually not included.

What is a coved upstand?

A raised lip at the back of a countertop that curves into the top with no corner joint. It removes the dirt-trapping seam where a separate upstand would meet the surface, and it is possible in solid surface.

Why does it matter whether a waste is slotted?

Because it must match the basin. A basin with an overflow needs a slotted waste; one without needs an unslotted waste. Fitting the wrong type is a common and easily avoided error.

Several bathroom vanity types shown together

In short

Precise Words, Fewer Disputes

Most vanity misunderstandings are vocabulary problems rather than quality problems. A carcass is not a vanity, a photograph is not a supply scope, and a cut-out cannot be changed once it is machined.

Use the component list and the approved drawing as the definition of what you are buying, and confirm rough-in dimensions against finished floor level before production. Those three habits eliminate most of what otherwise gets discovered on site.

  • Carcass, stile, rail, panel: the box and its frame parts
  • Integrated, undermount, drop-in, vessel: how the bowl meets the top
  • Rough-in and finished floor level: the building's dimensions
  • Supply scope and component list: what is actually included
  • Carton dimensions govern the delivery route

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A pale wood panel with an inset strip, shown as a material sample

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