100-9x11.5 RIGID PHOTO MAILERS ENVELOPES FLAT MAILER By ValueMailers Protect important items with these rigid and durable cardboard mailers. 26 point paperboard for a clean white appearance. 9" x 11.25" Usable Space Perforated tab and tear system that saves you time in retrieving your item Reduces shipping costs by eliminating carton filler &amp; reducing labor. Multi-functional, expands to accept varying contents &amp; weights.