A9 Invitation Envelopes (5 3/4 x 8 3/4) in 6pt. Glossy White are a shiny white envelope with a smooth finish. These envelopes have a sophisticated square back flap, sealed by a Peel & Press strip, and are ideal for invitations, social mailings, holiday cards, greeting cards and more. A multipurpose envelope, the A9 is also suitable as an outer envelope for invitations, as smaller A sized envelopes (A8, A7, A6, A4, A2, A1) fit inside. The A9 accommodates 5 1/2 x 8 1/2 flat and folded cards (also known as A9 cards) and can be used as a larger reply envelope as this envelope fits inside A10 envelopes. The A9 envelope is also a must-have in your stationery collection if youĂre a serious crafter. Its dimensions neatly accommodate a half-folded sheet of paper for homemade card enthusiasts and letter-writers alike.Available plain or printed for customization, branding and creative uses, starting in small quantities of 50 to large quantities of 50,000 and more