These sizes have a single door and drawer, though some 12" cabinets do not have a drawer. Some manufacturers have a fixed door so you have to specify whether the door is “hinged right” or “hinged left”. But many can be made to open either way (reversible).
BASE CABINET 27" to 48" wide
These sizes are double drawer and door, though some 27" cabinets may have a single drawer and the double door may not have a “style piece” between the doors. Sometimes the 45" and/or 39" and/or 27" is not available.
BASE DRAWER CABINET 12" to 24" wide
Most drawer stacks have 4 drawers though some have 3. Bread boards are optional on most base cabinets but it is common to put one in a base drawer unit. The 15", 18" 21" and 24" are most popular though the 21" is not always available, nor is the 12".
SINK BASE CABINET 24" wide
This is a single door cabinet for a single sink. Often used as a cooktop cabinet and for a range base with some cutting. Some manufacturers have reversible doors, others have to be specified right or left hinging. No drawers and usually no shelf. Differs from a sink front, which is described later
SINK FRONT 24" to 30"
This is just the front, no sides back or bottom. It is cheaper than a base unit, but by the time other pieces are bought and attached it may be just as expensive (normally a sink base is preferred). You may find it noted SF27-24. Since it’s just a front, the edges can be cut down to alter the size. In this case it comes 27" but can be cut down to a 24" if needed. Many times a 30" is a double door, but not always.
SINK FRONT 30" to 48" wide
Same notes as the 24" except a double door with false drawer fronts. 36" is most common and not all sizes are available. Some are made so 6" total can be cut off (3" per side).
SQUARE SINK FRONT 40" wide
Another way to have a corner sink. Needs “L” shaped sink.
SINK BASE CABINET 27" to 48" wide
A cabinet with no drawers (but with false drawer fronts) to receive a sink which would be set through a hole cut in the counter top. It usually has no shelves. The 36" size is the most popular by far, then 30" and 33". Not all increments are always available.
DIAGONAL SINK FRONT 36" to 42" wide
Similar to 24" sink front but with “wings” on each side, at 45° to cut diagonally across a corner. Can use a standard sink. A diagonal sink sounds “cute” but any sink in a corner makes that area quite congested. Think twice about using a corner sink.
At Paul Cabinet Sourcing, we are proud of custom making base cabinet of any type and size upon customer's needs.