Here is a storage shelving solution that is truly unique! Each shelf can hold 21 pint jars or 12 quart jars (with room for more half-pints around them). This seven-shelf unit is made up of individual shelves and separate upright pieces that simply stack together with no fasteners, making it a very easy task to assemble as desired. If stacked seven-high this product will measure 24 inches wide, 10 inches deep, and about 64-1/2 inches tall, with 10 inches between each shelf. A one inch lip is formed up to keep items from falling off. Or assemble them with the shelf lips pointing down for a unique bookshelf. Also makes great modular storage in the garage, in closets, and in kitchen cupboards. This product is made from rigid, light-weight aluminum in the USA.