Mead plain white envelopes are ideal for use in the home or at the office. Traditional gummed-adhesive V-flap closure. Substantial business-weight paper. The No. 10 size measures 4.13" x 9.50" and is ideal for many business mailings. Tastefully attractive smooth finish. Includes 50 envelopes per box. Sold as a pack of 12 boxes for a totals of 600 envelopes.