Columbian Invitation Envelopes, A2, 4-3/8 x 5-3/4 Inches, White, 100 Per Box (CO198) Envelope is designed for computer generated invitations, greeting cards, announcements and more. Sized to hold a 8-1/2" x 11" sheet folded in quarters. Premium 24lb white wove stock. Executive Style diagonal seam V-flap construction. Moisture activated gummed seal. 4-3/8" x 5-3/4" 100 envelopes