Width extends from 16 to 25.6 inches on this shelf riser, which means one unit fits a narrow cupboard, a wide pantry run or an awkward countertop corner instead of leaving gaps at either side. Height between the tiers adjusts across a 3.9 to 7.1 inch range so tall spice jars and short tins each get the clearance they need. Two levels double the usable area inside a cabinet by reclaiming the dead air above stored items, and the frame stacks with additional units to build a taller system where headroom allows. Each tier carries up to 22.05 pounds, enough for canned goods, jars and small kitchen tools. Fully extended the riser measures 25.6 by 8.7 by 19.7 inches and it retracts to 16 by 8.7 by 19.7 inches, weighing 7.3 pounds. Placement works equally in a kitchen cupboard, a bathroom cabinet or an office supply shelf. Wipe the frame clean with a damp cloth.