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.