Smart Space Design

Cabinet and closet dimensions, measured instead of guessed

Most storage advice stops at the number. This site keeps going into the part that decides whether anything fits: the tolerance around that number, and the hardware that has to live inside it.

Start here

Cabinet interior dimensions: four numbers decide what fits

Clear opening width, usable depth, clear height and travel clearance — and why a 24-inch cabinet takes a 21-inch tray. The reference page the rest of the site builds on.

Why your pull-out shelf doesn't fit (you measured the wrong thing)

The box and the opening are two different shapes, and the tray has to survive both. Four symptoms, four different faults, and the 3/4-inch spacer that explains most of them.

What this site covers

Three measurements cause almost every closet and cabinet problem I run into — the depth of the box, the clear width of the opening, and the height a rod or shelf sits at. Get one of them wrong and the failure shows up months later, when the doors stop closing or the trays start scraping.

How the numbers are produced

I build cabinets for a living outside the U.S. The measurements on these pages come from cabinets I have actually measured and installed; U.S. industry dimensions are cited separately and labelled as typical ranges rather than as rules. Where the two disagree, the page says which one it is quoting, so you can decide what matters for your own space.

A single measurement is not a rule. Where I only have one case, the page says so, because one cabinet is an anecdote and a hundred is a pattern.

What you will not find here

No design consultations, no custom build quotes, and no styling galleries. This site is about dimensions and parts — the things you can check with a tape measure before you buy anything.