File projects small and large. Hefty 25 pt. Type III pressboard covers, 17 pt. Kraft dividers. 2" expansion with matching-color gusset. 1" bonded fasteners on inside front cover and back cover. 1" dual fastener on partition dividers. Classification Folder Type: N/A; Size: Letter; Number of Sections: 4; Cover Material(s): 25 pt. Pressboard.