We prefer to receive sheet film in the manufacturer 3 piece boxes. Film boxes will be returned.
If you do not have access to the boxes, you could use a dark bag made for sheet film. They are available at bhphotovideo.com. Search for “Delta 1 Light Tight Safe-T-Bags”. If you use one of these bags, please pack it carefully so it is not cut by postal equipment.
Note if film is submitted in film holders, there is a $1.00 surcharge per holder.
Make sure you identify exactly what kind of film is being submitted as many notch codes are very similar. Also, do not combine different film stocks in a bag or box.