200 - 6x6 RIGID PHOTO ~ MAILERS ENVELOPES FLATS BY VALUEMAILERS Protect important items with these rigid and durable cardboard mailers. 18 point paperboard for a rigid and clean white appearance. Perforated tab and tear system that saves you time in retrieving your item Reduces shipping costs by eliminating carton filler & reducing labor. Multi-functional, expands to accept varying contents & weights.