For those occasions calling for a dainty announcement envelope, the A1 (3 5/8" x 5 1/8") is your ideal choice – this diminutive envelope is the smallest of its kind allowed through the mail! The A1 envelope is a social and invitation-type envelope; it dimensions make it the most common-sized envelope used for RSVP and announcement purposes. Featuring an attractive square flap, the A1 fits inside all other "A" envelope sizes.
Fresh and elegant, our Mulberry picks in a smart, smooth finish 80 lb. text weight stock offer a “berry” fine look for corporate communications, invitations and much more. Available in sizes A1 thru A10, #10 Square Flap, #10 Open End, 6 x 9 Booklet, 9 x 12 Open End, 5 x 5 square, 6 x 6 square and 7 x 7 square for an array of creative options.