Ink Jet Promotional Gift Certificate Mailer Ink Jet Promotional Gift Certificate Mailer Provides professional-looking results from your ink jet printer Heavyweight, coated stock produces sharp text and brilliant colors Includes easy-to-follow formatting guide Includes clear mailing seals Guaranteed performance in all ink jet printers An interactive way to promote your business! Send your message accompanied by a 6-3/4 x 3 detachable cardperfect for coupons, gift certificates, response cards, tickets, and more! White. 8-1/2 x 11. 25 certificates per pack.