LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos, sold as 500 per box.Opening: Square flap.Choose from an assortment of delightful colors and send your next invitation or letter in style.Dimensions: 5 1/4"L x 7 1/4"W.Closure: Moistenable glue.Laser printer compatible.Material: Paper.A modern way to convey quality and add personality, with sparkle and shimmer that stands out.Paper weight: 80 lbs..Size: A7 (5 1/4" x 7 1/4").Boasting a smart-looking square flap, the A7 envelope fits inside envelope sizes A8, A9, A10.A7 Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos.Looks amazingly like the metal or mineral the color is named for.Comes in Navy, 80lb. Text Paper.A7 style is a multipurpose envelope, ideal for social and announcement functions, it may also be utilized as an outer envelope for invitation purposes.Navy.Peel & Press Sealing Method.Finish: Smooth.LUX Size A7 envelope with glue in navy color measuring 5 1/4" x 7 1/4" has basis weight of 80 lbs features a smooth finish and is sold as 50 per pack..The A7 Envelope (5 1/4" x 7 1/4") in 80lb. Navy is a classic navy envelope, perfect for upscale invitations, announcements, mailings, and more. Seal by convenient adhesive strip along square flap. Available either plain or printed.