Staples Expandable Hanging Wall File Pockets, 4 Pockets, Letter-Size, 11-3/4"H x 13-1/2"W x 4-1/2"D, Smoke (889188) Hanging options include wall, partition or door, using optional hanging brackets Pockets snap easily onto starter unit to allow multiple pockets in a single set Expansion options allow complete flexibility in configuration Wall-mounting hardware included