LUX A7 Vertical Invitation Envelopes (7 1/4 x 5 1/4) are ideal for social/announcement functions; it may also be utilized as an outer envelope for invitation purposes, sold as 50 per box. Opening: Square flap. Finish: Vellum. Bright white. Material: Paper. Laser and inkjet printer compatible. Add a printed return address or upload a design using your digital file. Unique A7 vertical type envelope (7 1/4" x 5 1/4") will surely be an eye catcher. . you can send your 5 x 7 pictures or cards anytime. Paper weight: 70 lbs. Even brighter than our other bright whites, this 70 lb. stock has a little more heft than standard 24lb. or 60lb. for an added sense of quality and strength. A7 style is a multipurpose envelope, ideal for social and announcement functions, it may also be utilized as an outer envelope for invitation purposes. Boasting a smart-looking square flap, the A7 vertical envelope fits inside envelope sizes A8, A9, A10. Size: A7 (7 1/4" x 5 1/4"). Closure: Peel and press. Seam type: Side. It's easy to customize your envelope. Lux® Size A7 Vertical envelope in bright white color with a basis weight of 70 lbs has a dimension of 7 1/4" x 5 1/4" and features a vellum finish, is sold as 50 per pack.