USES: Invitations, Announcements, Holiday Cards, Greeting Cards, 5 x 7 Cards, 5 x 7 Photos, Letters, Personal Mail, Direct Mail. EVENTS: Weddings, Parties, Holiday, Corporate, Banquets, Showers, Birthday Size: A7 Invitation Envelopes 5 ¼ in x 7 ¼ in / 5.25” x 7.25” / 133.35mm x 184.15mm Quantity: Pack of 50 Color: 70lb. Avon Brilliant White Linen Printable on off-set printing presses and some home printers. A7 Invitation Envelopes (5 1/4 x 7 1/4) - Neenah Paper Classic Linen in 70lb. Avon Brilliant White are white colored envelopes. These envelopes have an elegant square back flap and are ideal for invitations, social mailings, greeting cards and more. Sealing these envelopes is made easy by a moistenable glue strip located on the inside of the back flap. A7 envelopes are perfect for holding A7 flat and folded cards. You can also use the A7 size as an outer envelope for invitations, as smaller A sized envelopes (A6, A4, A2, A1) fit inside. Constructed from high-quality, durable 70lb. Avon Brilliant White paper stock.