limpala
Most organizers that get returned were never the wrong product. They were the right product for a cabinet three centimetres wider than yours.
A cabinet is not a box. The opening you see is smaller than the space inside, the space inside is not square, and the door decides how much of it you can actually reach. Here is how to measure so the thing you order slides in on the first try.
Measure the opening, not the front
Open the door and measure the clear opening: left inside edge to right inside edge, and top to bottom. Do it at three heights, because carcasses go out of square over the years and the narrowest point is the one that counts. Write down the smallest of the three numbers.
Do the same for depth. Push the tape to the back panel, not to the back of the shelf. On many cabinets the shelf stops two or three centimetres short of the back wall, and that gap is either free storage or a place where small things fall out of sight, depending on what you put in.
The four things that steal width
Between the opening you measured and the space an organizer really has, four things get in the way.
- Hinge cups. On a frameless cabinet the hinge arm folds into the opening. Look at the hinge with the door open. If the metal arm sits proud of the side panel, subtract its thickness from your width.
- A face frame. Older and American style cabinets have a wooden frame around the front. The frame is narrower than the box behind it, so a bin that fits the inside will not pass through the opening. Measure the frame, not the box.
- Drawer runners. Side mounted runners eat roughly a centimetre on each side. Undermount runners eat height instead.
- The plinth or a raised bottom. Some cabinets have a lip at the front edge. A bin that clears the opening can still catch on that lip.
Leave clearance, and leave it on purpose
A bin that measures exactly the width of the opening does not fit. It binds, it scrapes the paint, and after a month you stop pulling it out at all.
Leave five millimetres on each side for something you lift straight up and out. Leave ten millimetres on each side for anything that slides on a rail or that you pull out while it is loaded. Leave twenty millimetres at the top of a drawer if the contents can shift, because the lid of a stacked box needs somewhere to go when it rides up.
Check the door before you order
Two measurements matter that most people skip. The first is the swing: open the door as far as the wall or the neighbouring cabinet allows, and see whether you can still get a wide bin past the edge. In a corner cabinet the answer is often no, even though the inside is huge.
The second is the handle. A handle on the inside face, or a hinge that closes over the opening, reduces the usable width at exactly the height where you are trying to slide something in.
Under the sink is its own problem
Nothing under a sink is rectangular. The trap, the shut-off valves and sometimes a waste disposal unit all sit in the middle of the space, and they sit at different heights on the left and the right.
Measure the free height in front of the pipe and behind it separately. Then measure the horizontal distance from the cabinet side to the nearest part of the pipe. That number, not the full width, is what a two part or U shaped organizer has to work with. This is the one cabinet where a set of two narrow bins usually beats one wide one.
Write it down in one line
Before you buy anything, put your cabinet on paper like this:
Opening W x H x D, narrowest point. Minus hinge. Minus frame. Clearance 10 mm each side. Obstruction at height X.
Take that line with you when you compare products. Every listed measurement you then read is either smaller than your number or it is not going to fit, and you will know which within a second.
Two habits that save the most returns
Measure in millimetres, not in centimetres rounded to the nearest half. Half a centimetre is the difference between sliding and jamming.
And check whether the product measurement you are reading is the outside or the inside. Storage boxes are usually listed by outside dimensions and by volume. A box listed as 24 litre with an outside width of 40 cm holds noticeably less than 24 litre of anything with corners. The volume is the water it would hold. Your things are not water.