Description Premium smooth finish announcement envelopes (square flaps). Acid free, available in white and natural in a variety of sizes. Matching cardstock available in 65#, 80#, and 100# in 8½” x 11″, 12″ x 12″, and 11″ x 17″. Matching prefolded announcement cards and plain flat cards available to fit all envelope sizes. Available Sizes: #4 — 3 5/8″ x 5 1/8″ #5½ / A-2 — 4 3/8″ x 5 3/4″ #6 / A-6 — 4 3/4″ x 6 1/2″ #7 / A-7 — 5 1/4″ x 7 1/4″ #8 / A-8 — 5 1/2″ x 8 1/8″ #9 / A-9 — 5 3/4″ x 8 7/8″ A-10 — 6″ x 9 1/2″
