The NSB35-120 Flip-Top Negative Storage Box from Print File is a black linen box with a flip-top thumb-cut lid used to store 35mm & 120 negatives and protect against dust and scratches. The box is also compatible with the NFF35-120 Negative File Folders. The box has metal-reinforced corners which can sustain additional weight when boxes are stacked on top of each other during storage. The acid- and lignin-free box has passed the Photographic Activity Test (PAT) which makes it suitable for long-term storage.