LUX Envelope in smoke color measures A7 (5 1/4" x 7 1/4"). Envelope ideal for social and invitation purpose has paper weight of 80 lbs and is sold as 500 per box..Comes in Smoke, 80lb. Text Paper.Opening: Square flap.Collection: Exclusive.Perfect size for 5 x 7 invitations or cards.A7 Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos.Peel & Press Sealing Method.500/box.LUX Envelope in smoke color measuring A7 (5 1/4" x 7 1/4") features peel and press flap for secure sealing and is sold as 500 per box..The A7 Envelope (5 1/4" x 7 1/4") in 80lb. Smoke is part of the bold LUX Paper collection. The sleek, dark gay envelope is perfect with white ink printing, and is great for sending invitations, announcements and more. Seal by convenient adhesive strip along square flap. Available plain or printed.