Oxford Pressboard Report Cover w/Prong Clip,Black, 11x17, 1 per box (13206) 3" CAPACITY: 8 1/2" fastener can hold up to 3" of paper PROTECTION: Made of extremely durable paper stock in order to protect oversized documents DURABLE: Heavyweight, rigid pressboard provided extra durability FEATURES: One black 11x17 Oxford Pressboard Report Cover w/clip SECURE: tape reinforcement on side hinge