Review on Aviditi Corrugated Square Mailer M3318 by David Skyline

I send them in and they hold up very well! ADVANTAGES: They don't roll, are shipped flat, very easy to assemble, lighter than poster tubes (cheap shipping!), clean, easy to stick, easier to grab the poster to pull it out of the tube. AGAINST: no! TIPS: Be sure to order a size at least a few inches longer than you intend to ship. An 18x24" poster will NOT fit in an 18" tube.