Monarch Envelopes (3 7/8 x 7 1/2) - 24lb. Bright White (1000 Qty.) Size: Monarch Envelopes / 3 7/8 in x 7 1/2 in / 3.875" x 7.5" / 98mm x 190mm Quantity: Pack of 1000 Color: 24lb. Bright White USES: Invitations, Announcements, Holiday Cards, Greeting Cards, Letters, Personal Mail, Direct Mail. EVENTS: Weddings, Parties, Holiday, Corporate, Banquets, Showers, Birthday Printable on off-set printing presses and some home printers.