Columbian 5.75" x 8.75" Greeting Card Envelopes, 100 Count, Ivory (CO388) Envelope is designed for computer generated invitations, greeting cards, announcements and more. Sized to hold a 8-1/2" x 11" sheet folded in half. Premium 24lb ivory wove stock. Side seam construction. Moisture activated gummed seal. 5-3/4" x 8-3/4" 100 envelopes Premium 24lb ivory wove stock. Side seam construction. Moisture activated gummed seal. 5-3/4 x 8-3/4 Inches 100 envelopes Envelope is designed for computer generated invitations, greeting cards, announcements and more. Sized to hold a 8-1/2 x 11 Inches sheet folded in half.