9x11.5 inch 28PT 550GSM Flat Mailing Envelopes Rigid Paper Mailers for Document Shipping

Rigid stay-flat mailers are meticulously crafted to safeguard flat or rigid items during transit, ensuring they remain intact and undamaged. Constructed from sturdy paperboard material, these mailers effectively prevent any bending or crushing of the contents inside while featuring user-friendly self-sealing flaps.

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