1.Protects And Stores "Valuble" Forms Of All Types. 2.Durable And Light Weight. 3.High Tension Clip Holds Forms In Clip. 4.Use With Form Sizes Up To 8 1/2"*12" and 5 2/3"*9 1/2". 5.Two Storage. 6.Material:aluminum sheet. 7.Size:8 1/2"*12" and 5 2/3"*9 1/2". 8.Packing: inner packing:1pcs in a blister;outerside packing:10pcs in a carton.