LUX Size A7 envelope with peel and press in black with gold lux lining color has a basis weight of 80 lbs. Lined flap envelope measures 5 1/4" x 7 1/4" is sold as 50 per pack..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.Choose from an assortment of delightful colors and send your next invitation or letter in style.A7 style is a multipurpose envelope, ideal for social and announcement functions, it may also be utilized as an outer envelope for invitation purposes.Opening: Lined flap.Finish: Vellum.Laser and inkjet printer compatible.Material: Paper.Closure: Peel and press.Comes in Black w/Gold LUX Lining, 80lb. Text Paper.Boasting a smart-looking square flap, the A7 envelope fits inside envelope sizes A8, A9, A10.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.LUX Size A7 envelope with peel and press in black with gold 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 Black with Gold Foil Lining is an elegant spin on a traditional envelope. The grooved, gold foil-lining and 70lb. weight make these envelopes special and perfect for mailing photos, cards, invitations and more. Seal by convenient adhesive strip along square flap. Available either plain or printed.