The cabinet, the top and the basin
The cabinet is joinery. The top is a slab of stone or a manufactured surface cut with a hole in it. The basin drops into that hole, sits on top of it, or is moulded into the top as a single piece.
Those three come from different production processes and are frequently sold separately. A vanity described by its cabinet width alone may or may not arrive with the stone on it, and the product page is where that is stated.
Marble and onyx tops
The stone tops here are marble with an onyx among them, which is an unusual material for a vanity and worth understanding.
Onyx is translucent: light passes into it rather than stopping at the surface, so a backlit onyx top glows and an unlit one reads as a pale banded stone. It is also softer than marble. Marble sinks covers the carved stone basins that go with tops like these.
Width is the number that decides everything
The widths here run 29, 31, 37, 46 1/2, 47 1/8 and 48 inches, with depths around 21 to 22 inches.
A vanity has to fit between fixed things: a wall, a door swing, a toilet, a shower. The depth matters as much as the width in a small room, since 22 inches projecting from a wall into a space with a door swinging into it is the commonest reason a chosen vanity does not fit.
The heights cluster around 34 inches
Most of these stand between 33 and 34 1/2 inches to the top, which is the modern comfort height.
Older bathrooms were built around 30 to 32 inches, which was a height chosen when basins were used by children as often as adults. The four inch difference is noticeable in use and it matters when replacing a vanity in an older house, since the plumbing behind it was set for the old height.
Wall hung or standing on the floor
A vanity either stands on the floor or hangs off the wall, and the two answer different rooms.
A floor-standing unit hides the plumbing completely and gives the most storage. A wall-hung one leaves floor visible underneath, which makes a small bathroom read larger and makes the floor easier to keep, at the cost of putting the whole weight of a cabinet and a stone top onto a wall. That is a structural question rather than a decorative one.
The finishes are cabinet finishes
Warm walnut, light oak, navy blue, white and brushed run through this range, which are joinery finishes rather than tile ones.
That is the part of a vanity that dates fastest and the part hardest to change, since the cabinet is the object. A stone top can be replaced and a basin swapped; a navy cabinet stays navy.
Where this range sits
This is a compact set. For the full range sorted by basin count, single vanities and double vanities are far larger collections.
Bathroom faucets carries the spouts, and the height of the basin decides which of them will work, since a vessel sitting on top of a vanity needs a taller faucet than one dropped into it.
