Akro-Mils 30138 18-Inch by 6-Inch by 4-Inch Plastic Nesting Shelf Bin Box, Yellow, Case of 12 Shelf bins nest inside each other, taking up less room when empty Bin accepts up to 7 40130 accessory dividers, 15 30101 small bin cups, or 6 30102 large bin cups Wide hopper front for easy access Outside Dimension: 17-7/8-Inch L x 6-5/8-Inch W x 4-Inch H - Inside Dimension: 16-1/2-Inch L x 5-1/2-Inch W x 4-Inch H Made in the USA