Heavy-duty mailer cartons from Grainger help you safely ship delicate items. Extra-heavy-duty cardboard boxes with tuck tops, reverse tuck chipboard cartons and foam lined mailer cartons help protect fruits, cheese assortments, candies and other food items that don't require refrigeration. You can also ship sensitive electronics equipment in these sturdy boxes. Shop Grainger today for heavy-duty mailer cartons to help safeguard valuable items for shipping.