There are literally thousands of different types of envelopes. While we look to showcase a very wide selection in our online store, such as Simple Seal. Simple Seal Window. Commercial. Invitation. Booklet. Squares. Open End. Booklet Peel & Seal. Remittance - Donation. Security Tint. It is impossible to list them all online. At 4OVER4.COM, Go Custom! We have thousands of custom-sized and specialty envelopes such as Coin Envelopes. Gift Card Envelopes. Currency Envelopes. W-2 Envelopes. Full-Faced Window Envelopes. No Glue Envelopes. Tyvek Envelopes. Button & String Envelopes. Just to name a few. We also sell social announcement envelopes in hundreds of standard and exotic colors, such as kraft, black, blue, red, pink, violet, lilac, moss, nude, canary, orange, green, you name it. At 4OVER4.COM, we take pride in having your project come to life. Don't see what you are looking for in our printed envelopes section? No Problem! Simply contact our Support Team with the specs of your custom project at Support@4over4.com or you can use the Custom Project page to submit your request https://www.4over4.com/custom-project