We carry both catalog and booklet envelopes. The difference between the two is that the catalog envelope flap opens up on the small end and the booklet envelope flap opens up on the larger end. Besides the flap position, they are exactly alike. We offer 3 sizes on our website 6x9, 9x12 and 10x13. All our catalog and booklet envelopes are made from 24# white wove paper stock and are a bright white. With the exception of the 10x13 which is a 28# bright white paper stock. We offer one and two colors on the 10x13 envelopes and we also offer full-color printing in addition to one and two colors on the 6x9 and 9x12. We cannot print bleeds or to the edge of the envelopes. Prices are based on light to medium print coverage. If you are unsure if your artwork is acceptable, please email it to us and we will take a look. Most printed orders ship via FedEx in 5 business days with free shipping. Rush service is available. If you need a size that is not on our website, give us a call or send an email and we can give you a quote. With over 30 years in the envelope printing business, we are confident you will be satisfied with our products. With our great service, low prices and free shipping, we are the best value on the web.