Heavy duty camouflage cover Easy to install and remove documents and clip securely without drilling the Z-type allows you to select files according to the type of documents you are using. The bi-fold type is a Z-type file with hardware on the left end to hold a schedule or track sheet in the view. Punchless (Z type) File; Standard: B5-S (B4 fold); Capacity: 60 sheets; Back Width: 0.6 inches (15 mm); Color: Indigo; External Dimensions: Length 10.6 inches (267 mm) x Width 8.5 inches (214 mm); Material: Cover: Camras File Paper; Cover Thickness: 0.03 inches (0.75 mm)