These heavyweight cards feature a window in a trifold card to display your creative work, photographs or greetings. Create custom gifts in the form of thoughtful artwork, or showcase a meaningful photograph. Details: White 40 card and envelope sets 80 lb. (216 gsm) paperweight Trifold Double-stack adhesive tabs included Acid-free Size Information: 5" x 7" (12.7cm x 17.78cm) card size 3.25" x 4.75" (8.25cm x 12.065cm) die-cut window opening5.25" x 7.25" (13.3cm x 18.4cm) envelope size