26.5 quart Weathertight storage boxes make organizing simple and easy. Grooves on the lid are designed to stack multiple of storage bins securely to maximize limited storage space and create a customized storage solution. Stacking grooves also allow boxes to lock in place and prevent shifting. Dimensions: 19.55"L x 15.56"W x 7.99"H -- Inside Dimensions: 17"L x 13.5"W x 6.13"H