A2 Invitation Envelopes with Self Seal Closure and Premium 24 lb. White Wove Paper for a Personal Touch. Quality Park has the Invitation Envelope you are looking for! Our 4-3/8"" x 5-3/4"" envelope is perfect for invitations, photos, announcements, RSVPs, greeting cards and many other social occasions. They are constructed from premium 24 lb. white wove paper for a high quality finish. Our Redi-Strip self seal closure provides an instant seal and is dust free, prolonging the life of the adhesive. Quality Park's Invitation Envelopes feature the following: - A2 sized, with dimensions of 4-3/8"" x 5-3/4"" - Fits a 8-1/2"" x 11"" sheet of paper folded into quarters - Is perfect for computer generated invitations, greeting cards and letters - Inkjet and laser printer compatible for quick and easy customization and bulk mailing - 100 invitation envelopes per box"