UP - 1/4 Screwdown Recessed Holder"

1/4 thick screwdown holder for 2-1/2" x 3-1/2" (63.5mm x 88.9mm) standard sized cards with recessed area to hold the cards in place. Designed with two-piece ultra clear material and four-screw closure with one screw at each corner. Acid-free and no PVC."