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To help make cost-effective decisions when it comes to choosing the packaging you need, we’ve created Royal Mail postal size filters. Our range of large letter postal boxes fit within Royal Mail large letter sizing so that you can keep your postage costs to a minimum. Choose from white and brown large letter postal boxes made from robust corrugated cardboard for excellent protection. As with all of our postal boxes, these large letter sizes are a great sustainable packaging option made from recycled materials, easily recyclable, and fully plastic-free.
Not only did we want to provide our customers with a great range of eco-friendly packaging, we also wanted to give our customers the opportunity to give back to the planet with their packaging. Thanks to our incredible charity partners, you can choose to donate 1% of your spend to environmental charities or protect 1000m2 rainforest every time you order large letter postal boxes with us.