Our Ace #10 window envelopes are printed to Ace’s corporate design standards on 24# white wove stock. 500 envelopes per box. To place an order, choose your box quantity and then click “Add” to place in your shopping cart. At that point, you can personalize them with your store’s information. If you have any questions, please feel free to contact a Centurion Service Representative at (800) 323-2193.