Tarifold, Inc. W291 Wall Unit Reference Starter Set with Ten Display Pockets, 20 Sheet Capacity Tarifold, Inc. Wall Unit Reference Starter Set with Display Pockets. Color-coded display pockets hold letter size sheets; two viewing sides per pivoting pocket. Expandable by mounting units side by side. Color-coded display pockets hold letter size sheets; two viewing sides per pivoting pocket. Expandable by mounting units side by side. Mount on desk base of Desktop Starter Set. Tarifold, Inc. Wall Unit Reference Starter Set with Display Pockets. Color-coded display pockets hold letter size sheets; two viewing sides per pivoting pocket. Expandable by mounting units side by side. Mount on desk base of Desktop Starter Set.