Supply Air 7x9 Inch White Rigid Stay Flat Cardboard Mailers Self-Seal Closure 250 GSM Paperboard for Documents Photographs Certificates

Highlights

• DIMENSIONS: Interior usable space measures 7 inches wide by 9 inches long; accommodates flat items up to 6.75 inches by 8.75 inches; overall exterior dimensions 7.5 inches by 9.5 inches including flap and seal area
• DIMENSIONS: Interior usable space measures 7 inches wide by 9 inches long; accommodates flat items up to 6.75 inches by 8.75 inches; overall exterior dimensions 7.5 inches by 9.5 inches including flap and seal area
• MATERIAL: White paperboard exterior constructed from 250 GSM cardstock; rigid 0.020 inch thickness eliminates internal flex to maintain stay flat structure; absorbs minor impacts without transferring force to contents
• WEIGHT: Each individual mailer weighs 0.09 pounds; 250 GSM paperboard density provides structural rigidity while maintaining weight suitable for USPS First Class Mail when paired with lightweight contents under postal threshold
• MATERIAL: White paperboard exterior constructed from 250 GSM cardstock; rigid 0.020 inch thickness eliminates internal flex to maintain stay flat structure; absorbs minor impacts without transferring force to contents

Description

Supply Air 7x9 inch white rigid stay flat cardboard mailers are constructed from 250 GSM (grams per square meter) white paperboard. Each mailer measures 7 inches wide by 9 inches long interior usable space. The exterior white surface accepts ink from laser printers, inkjet printers, and pen for addressing and labeling. Interior compartment accommodates flat items measuring up to 6.75 inches wide by 8.75 inches long. The stay flat design eliminates the internal flexibility found in poly or bubble mailers, maintaining rigid structure to prevent contents from bending or creasing during shipping and handling. Each mailer weighs 0.09 pounds. White paperboard exterior provides clean appearance for professional correspondence. Self-seal strip runs the full width of the flap, creating edge-to-edge seal coverage. The 250 GSM paperboard density provides structural rigidity while maintaining a weight profile suitable for standard USPS First Class Mail when contents remain under weight threshold. Mailers ship flat and ready to use. Manufactured in the United States. Available in multiple pack quantities to accommodate varying volume requirements.