what are the measurements of an a6 envelope
Square Flap Envelopes. The A6 Envelope is 4 3/4 x 6 1/2 in size, perfect for invitations, social mailings, holding 4 x 6 photos, as an inner or outer invitation envelope, greeting cards, and more. With two distinct flap types, a square flap and elegant contour flap, these envelopes are perfect for any occasion.