Akro-Mils 30128 18-Inch by 4-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 40120 accessory dividers, 8 30101 small bin cups, or 3 30102 large bin cups Wide hopper front for easy access Outside Dimension: 17-7/8-Inch L x 4-1/8-Inch W x 4-Inch H - Inside Dimension: 16-1/2-Inch L x 3-Inch W x 4-Inch H Made in the USA