Easily and securely send mail with Catalogue Envelopes. Professional in appearance, these 9" x 12" catalogue envelopes feature a heavily gummed flap that is moisture-activated for a secure seal. Made from 24 lb stock, the envelopes are sturdy and completely conceal the contents inside. For added durability, the overlapping centre and bottom seams resist bursting. A catalogue orientation with open-end flap design makes it easy and secure to insert and remove contents from the envelope. FSC-certified, this product is compliant with sustainable forest management practices.