IDEAL FIT: Adjustable to fit almost all work, school or gym lockers, get your locker organized right away! Adjust width from 8" to 12 1/2", and height from 9 3/4" to 14". Shelf depth is 9 1/2".EASY TO USE: perfect locker shelf for work, school or gym lockers. Assembles in less than 2 minutes without the need for tools.STACKABLE: Stack one shelf on top of the other when purchasing multiple units. Legs of top shelf insert into top of bottom shelf. Create a shelf wherever you need one, or combine multiple shelves for tons of extra storage.DURABLE: Durable construction holds your belongings, strongly and securelySIDE-MAGNETS for Extra Support: Side magnets provide support to the shelf by affixing to the inside of a metal locker, allowing for a weight capacity of up to 40 lbs Adjust this locker shelf to suit your needs. The width is adjustable from 8 inches to 12 1/2 inches while the height is adjustable from 9 3/4 inches to 14 inches. The depth is 9 1/2 inches. Two or more units can be stacked one on top of the other. The legs of the upper shelf connect into a specially designed insert on top of the lower shelf to keep the units together. Side magnets provide support to the shelf by affixing to the inside of a metal locker, allowing for a weight capacity of up to 40 lbs. Our Locker Shelf fits into almost any locker to keep you organized. With adjustable width and height, this customizable shelf can also be stacked to create multiple shelves. For additional strength, the sides of the locker shelf come affixed with small magnets that connect to the inside wall of a metal locker. This prevents the shifting and shaking that is common with other locker shelf designs. The heavy-duty weight capacity of 40 lbs. per shelf means you can place your books, bags and other items knowing they will safely hold.