25-12.75x15 RIGID PHOTO MAILERS ENVELOPES FLATS BY VALUEMAILERS Protect important items with these rigid and durable cardboard mailers. 26 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.