Expandable Metal Rail: Expands from 15 to 25 inchesAdjustable Height: 4 LEVELS - Enables you to organize around those pesky pipes found under the sinkPerforated Steel Panels: 3 large panels (6-3/8 inches), 4 small panels (3-1/8 inches)Dimension: 15'' L x 11.25'' W x 15'' HElegantly Designed and Extremely SturdyOrganizing Has Never Felt So Easy!Mat included