White Gusset Mailers 12 1/2" OW x 9 1/2" OL - Pack of 100

White Gusset Mailers 12 1/2" outside width, 9 1/2" outside length. Self sealing White Gusset Mailing envelopes with a rigid design requires no stiffeners and resist crushing. Ideal for shipping books, photographs and documents. Will expand up 1"" to hold all your oversized items. Self-sealing end flap closes quickly without costly and time consuming taping.