Abstract: A sheet retaining device includes an upper member having a pair of hinged leaves supported thereby, with a plurality of ring members secured to the hinged leaves for engaging corresponding holes in sheets of material retained by the sheet retaining device. A pair of laterally spaced-apart elongated first ribs are located on the upper member and protrude outwardly from the upper member. At least one pair of laterally spaced-apart elongated second ribs protrude outwardly from the upper member and are spaced laterally outwardly from the first ribs. During shipment, the sheet retaining devices are packages together with one of the sheet retaining devices located below another of the sheet retaining devices. In this package, the ring members of the one sheet retaining device engage one or more of the ribs of the other sheet retaining device.

Abstract: A fastener apparatus for releasably fastening a sheet retaining apparatus to a cover member includes a plate member secured to the cover member and having an aperture therein. A pin member is reciprocally mounted to the sheet retaining apparatus, with a portion of the pin member being selectively positionable in the aperture to secure the sheet retaining apparatus to the cover member. Thus, the sheet retaining apparatus is readily assemblable and disassemblable from the cover member repeatedly by a user. Thus, the sheet retaining apparatus and the cover member may be shipped in an unassembled condition in a very compact package for later assembly by the consumer.