Measures 9″ long x 5-3/8″ wide at the top edge (3.75″ x 7-3/8″ at the base) x 3-5/8″ tall. (4.25″ tall with the lid on top). Lid comes apart to reveal additional compartments! Ribs in the bottom to aid in brush cleaning, and built in brush rests to protect your bristles. 16 holes to hold your brushes. Do you use a FatMax toolbox for your kit? The slot in the bottom of this tub fits nicely over the middle sections of your FatMax!