50 12x16,100 9x12 gray poly mailer shipping bag 2.5MIL*free expedited mail

50pcs 12x16, 100pcs 9x12. gray outer surface, black inner layer. exterior size: 12" x 16"+(1.5"flap). interior size: 12" x 16" 2.5 Mil. exterior size: 9"x 12"+(1.5"flap). interior size: 9" x 12" 2.5 Mil.

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