Columbian CO196 Gummed Seal Business Envelope, #10, 4 1/8 x 9 1/2, White (Box of 100) Envelope is ideal for all business, professional and personal correspondence; premium 24lb white wove stock Executive Style diagonal seam V-flap construction; moisture activated gummed seal; (#10) 4-1/8" x 9-1/2" 100 envelopes per box; made in USA