Supply Air 9x11.5 Inch White Rigid Stay Flat Cardboard Envelope Mailers 250 GSM Self-Seal, Multiple Pack Sizes

Highlights

• DIMENSIONS: Interior usable space measures 9 inches wide by 11.5 inches long; exterior dimensions measure approximately 11 inches length by 9.5 inches width when flat; flap extends approximately 2 inches from body opening; accommodates flat items up to 9 by 11.5 inches
• DIMENSIONS: Interior usable space measures 9 inches wide by 11.5 inches long; exterior dimensions measure approximately 11 inches length by 9.5 inches width when flat; flap extends approximately 2 inches from body opening; accommodates flat items up to 9 by 11.5 inches
• CLOSURE: Self-sealing adhesive strip runs along flap edge; closure activates by pressing flap down onto mailer body without water or additional adhesive; adhesive strip width measures approximately 0.75 inches
• WEIGHT: Each individual mailer weighs approximately 0.1 pounds; 250 GSM cardboard density provides rigid structure while maintaining mailability within standard USPS weight tiers
• MATERIAL: White uncoated cardboard exterior accepts pen, marker, and printed shipping labels; interior surface is uncoated white cardboard; no interior cushioning or bubble layer

Description

Supply Air 9x11.5 inch white rigid stay flat cardboard envelope mailers are constructed from 250 GSM (grams per square meter) white cardboard. Each mailer measures 9 inches wide by 11.5 inches long interior usable space. The exterior surface is white uncoated cardboard. The flap extends approximately 2 inches from the body opening. The cardboard thickness measures approximately 0.022 inches per mailer when flat. The rigid construction maintains flat geometry during handling and transit. Each mailer weighs approximately 0.1 pounds. The white exterior surface accepts pen, marker, or printed shipping labels. The interior space accommodates flat items measuring up to 9 by 11.5 inches including documents, photos, certificates, and lightweight rigid goods. The mailers are manufactured in the United States. Available in multiple pack quantities to meet different volume needs.