One of the most popular sizes for residential and commercial storage, the 18"deep shelf can be used in almost any room. Browse the sizes below to get the right fit for your space. Open-wire design prevents dust and dirt accumulation Holds up to 800 lbs per shelf, evenly distributed Shelves can be adjusted to any desired height in 1" increments along posts Made for indoor use, dry storage only To securely set and easily release shelves, tap their corners with arubber mallet. View ourWire Shelving Size Guideto see actual outer and inner dimensions.