QUARTER FOLD: Each A2 sized envelope is designed to hold a 8-1/2" x 11" sheet of paper folded in quarters, making this the perfect envelope for all your social stationary needs. SIDE SEAMED GUMMED FLAP CONSTRUCTION: Quality Park's Invitation envelopes have a moisture activated GUMMED seal allowing you to send invitations, photos, announcements, RSVPs and greeting cards with confidence and professionalism. PREMIUM 24LB STOCK: manufactured from premium 24 lb. white wove stock for a high quality feel. Perfect for adding a touch of elegance to social stationary. PRINTER COMPATIBLE: the A2 invitation envelope is designed for use with both inkjet and laser printing, allowing you to quickly process bulk mail or customize, saving you time and money. 100 ENVELOPES IN EACH BOX: provides a great value to ensure that you have enough for all your invitation, photo, announcement, RSVP and greeting card needs!