Easy-to-use Flat Rate paperboard envelopes feature a predetermined rate regardless of the weight or destination zone of the package.

• USPS SKU: EP_14-F
• Quantity/Pack: 10
• Maximum Order: 60 packs of 10
• This product is free and will ship separately with no shipping charge
• Call 1-800-610-8734 for orders exceeding the maximum allowable order size