Measure the usable space
Write down width, height and depth, measuring the narrowest point if the space is irregular. Check whether skirting boards, pipes, hinges or handles reduce the usable dimensions.
For shelves and drawers, measure the inside rather than the outside. For a vehicle, consider seat position, door openings and the shape of the boot. A photo with the tape measure in place can help you remember which measurement is which.
Account for movement and access
Open doors, drawers and seats through their normal range. Check that the item can be inserted, removed and cleaned without moving something heavy or blocking a route.
Think about who will use the storage and how often. A product that fits physically may still be impractical if it is too high, too deep or difficult to reach in ordinary use.
Compare product dimensions carefully
Look for assembled dimensions, internal dimensions and any notes about adjustment or required clearance. If only package dimensions are listed, ask the seller for the finished size before ordering.
Check material, cleaning instructions, returns information and compatibility details. Keep the measurements until the item arrives, then confirm fit before discarding packaging where the seller’s return terms allow.
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