Middle section between the compartments for holding a brush measures 7-7/8" x 1/2" x 1/4". The box has a detachable lid which has bowed metal clips to ensure a tight fit.

• Outside dimensions: 8-1/4" x3-1/2" x 1-1/4"
• Inside dimension: 7-7/8" x 3/4" x 5/8"