Folding type, for keeping 100 charts in hanging position. Teakwood framework with plywood panelling 10 hangers with 10 hooks on each hanger. Hangers slide on charts. Door with best quality lock index pasted inside door. Can be folded into 6" high parcel and can be assembled by tightening just for screws.
a. For 40" x 30" charts
b. For Bio Visual Charts