Check the listing for details. 6x8 Rigid Mailers, 450 GSM Self Adhesive Stay Flat Cardboard Envelopes rigid. Condition: New. Listed at 14.99 USD. Get your hands on these 6x8 rigid mailers from villago! Perfect for packaging and shipping, these self-adhesive stay flat cardboard envelopes are a must-have for any business or industrial setting. With a GSM of 450, these mailers are durable and will ensure your items stay safe and secure during transport. The exterior size of these mailers is 6x8, and they come in a pack of various. These envelopes are perfect for holding a variety of items, from documents to small packages. Make your packing and shipping processes more efficient and effective with these high-quality mailers.Get your hands on these 6x8 rigid mailers from villago! Perfect for packaging and shipping, these self-adhesive stay flat cardboard envelopes are a must-have for any business or industrial setting. With a GSM of 450, these mailers are durable and will ensure your items stay safe and secure during transport. The exterior size of these mailers is 6x8, and they come in a pack of various. These envelopes are perfect for holding a variety of items, from documents to small packages. Make your packing and shipping processes more efficient and effective with these high-quality mailers.