Records Center User Guide - Step 2: Pack Records in Boxes
Fold in bottom tabs per printed instructions. Tab #4 goes into slot formed by other three tabs. Easily detached rectangle goes into bottom of box for strength. Fold end flaps inside and down to reinforce end of box and hand hole. Tape the bottom securely.
Transfer records, including folders (but no hanging folders, please), from file cabinets to the boxes. Leave two inches of working space in the box.