From the Manufacturer: TUBE TECHNOLOGY42-72" EXPANDABLE CLOSET SHELF (SW72) offers a unique and perfect storage solution for every organization need. Use it in a closet, bedroom, office, bathroom, laundry room, mudroom, pantry, basement, garage, in a vacation home, condo, or studio. Easy, one person installation; no dust, no painting and no mess to clean up. The shelf is 12-inches deep, expands from 42-72 inches, and comes fully assembled. There is no cutting or measuring (no cutting it too short as with some other systems). The coated high strength steel tubes will hold up to 200 pounds and will not rust or mildew. All installation hardware is included. You mount the center bracket, expand the unit, hang it up and fasten to two side walls. Tube Technology has been a leader in unique and patented storage systems. We offer a line of products that are easy to install, built to the highest quality standards, and offer multiple options for where and how they can be used. Made with pride in the USA!End BRACKETS (SSMB-SW) are NOT included - these are used for mounting the unit centered against back wall, against one wall or opposite walls, for L or U shapes(for walk in closets), and installing multiple units in succession (for extra long shelves). End Brackets are sold separately or in kits: SW72-1B (which includes 1-SW72 and 1-end bracket for mounting 1 side of unit to back wall), or SW72-2B (which includes 1-SW72 and 2-end brackets for mounting entire unit to back wall without mounting to side walls).Product Description: EXPANDABLE CLOSET SHELF, 23" to 42" - Fully Assembled. The perfect solution for every organization need. Easy one-person installation. No cutting and no measuring. Mount the rod and shelf with the included hardware, expand the fixture to desired length and hang it up. No mess, no dust and no painting. Coated steel rods will not rust or mildew. Holds up to 200 lbs without hitting a stud.