LUX Envelope in holiday red color features a moistenable glue flap for secured sealing. Envelope measuring A7 (5 1/4" x 7 1/4") is laser/inkjet compatible, with weight of 60 lbs, sold as 500 per box..Opening: Square flap.Closure: Moistenable glue.Laser and inkjet printer compatible.A7 Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos.500/box.Comes in Holiday Red, 60lb. Text Paper.LUX Envelope in holiday red color measuring A7 (5 1/4" x 7 1/4") is ideal for use in announcement purposes and other special occasions, sold as 500 per box..The A7 Envelope (5 1/4" x 7 1/4") in 80lb. Holiday Red is the perfect red for holiday season invitations, mailings, announcements, and more. Seal by convenient adhesive strip along square flap. Available printed or plain.