LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos, sold as 50 per box.A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos.Dimensions: 5 1/4"L x 7 1/4"W.Opening: Lined flap.Finish: Vellum.Laser and inkjet printer compatible.Material: Paper.Boasting a smart-looking square flap.Size: A7 (5 1/4" x 7 1/4").A7 vertical envelope fits inside envelope sizes A8, A9, A10.Add a printed return address or upload a design using your digital file.White/black LUX lining.Grooved lining extends to a quarter of an" from the bottom of the envelope and is the perfect complement to your elegant design for weddings, holidays or party invitations.A7 style is a multipurpose envelope, ideal for social and announcement functions, it may also be utilized as an outer envelope for invitation purposes.Comes in White w/Black LUX Lining, 60lb. Text Paper.Closure: Peel and press.Paper weight: 60 lbs..Peel & Press Sealing Method.Seam type: Side.It’s easy to customize your envelope.LUX Size A7 envelope in white with black lux lining color measuring 5 1/4" x 7 1/4" has basis weight of 80 lbs has a vellum finish and is sold as 50 per pack..The A7 Envelope (5 1/4" x 7 1/4") in White with Black Foil Lining is an elegant spin on the traditional envelope. The grooved, black foil-lining and 60lb. weight make these square flap envelopes special and perfect for mailing photos, cards, invitations and more. Seal by convenient adhesive strip along square flap. Available plain or printed.