Quality Park photo document mailers are made of extra rigid fiberboard to protect your photos. Perfect for shipping and storage. Our photo envelopes have Redi-Strip self sealing closures for a fast instant seal. The perfect mailroom update for concerns about surface germs in the workplace. Skip the yuck stay safe and save time with every mailing. Seam Type: Side Flap Type: Cheese Blade Trade Size: Photo/Document Security Tinted: No.