JAM PAPER #10 Policy Business Premium Envelopes - 4 1/8 x 9 1/2 - Black Linen - 25/Pack Color: Black Linen Envelopes Size: #10 (4.13 x 9.5 inches) Quantity: 25 envelopes per pack Perfect for Greeting Cards, Invitations, Weddings or any announcement. Add a dash of color to an office or school setting. Keep confidential files under stylish cover or send some memorable mail.