Elevate Your Mailings with Custom Envelopes Custom Printed Envelopes are more than just a packaging solution; they’re a statement of your brand’s professionalism and attention to detail. At Quapri, we offer premium custom envelope printing services tailored to meet the needs of businesses, events, and personal use. Our envelopes combine superior design, durability, and customization options, making them the perfect choice for any occasion. About this item: Ordinary size( 4⅛ x 9½ ) envelope. Available in 90 gsm paper. Personalized designs on the front, with the back remaining a clean, classic white.