Use 18-compartment roll file to store multiple-size documents in the same file with built-in tube length adjuster tabs that extend to 24", 30", and 36". Each compartment measures 3-3/4" x 3-3/4". Labeling grid on inside front flap allows easy identification of contents. Stack roll files up to three high. Design features corrugated fiberboard with wood-side panels for extra strength.