The best storage for motion picture film includes appropriate temperature and humidity conditions and good-quality storage enclosures. Metal or plastic cans are safe for film, provided that the containers are not rusty or broken. Archival-quality cardboard boxes are also safe. If film is kept at or near room temperature, do not seal film inside tightly closed bags. At all costs, avoid storing film in prolonged dampness. Under damp conditions, the film will stick together and mold may grow, ruining the emulsion. Damp locations such as basements or attic areas are particularly unsuitable for film storage.

A relative humidity (RH) of 20 to 50% is best for film storage, with a temperature that is as cool as possible.

For more information on film preservation and film storage, visit the Image Permanence Institute web site, where you can also download a free Preservation Calculator that helps evaluate storage conditions.