Diploma Covers are the ideal way to protect and preserve achievement certificates and diplomas. Slits in each corner conveniently hold portrait 8.5" x 11" certificates. Choose the optional clear acetate sheet for further protection. The Smooth vinyl material can be heat stamped with the institution or organization logo. Product Dimensions: OPEN: 18-1/4" x 11-5/8"; CLOSED: 9-1/8" x 11-5/8". Made in the USA. No tariffs apply.