Browse our full range of large letter postal boxes in the table below or use our handy Box Finder if you need help locating the right parcel.
Boxes Per Pack
Price Per box (ex. VAT)
9 x 6.3 x 0.6" 9 x 6.3 x 0.6"
22.9 x 15.9 x 1.6cm 22.9 x 15.9 x 1.6cm
229.1 x 159 x 16mm 229.1 x 159 x 16mm
We make all our large letter postal boxes with high-quality corrugated cardboard. These durable large letter mailing boxes ensure that your shipped goods arrive safely.
If you're searching for PIP large letter boxes, these boxes are ideal as they meet Royal Mail guidelines. If you would like to learn more about Royal Mail large letter box dimensions you can read our full packaging guide.
Need a high number of large letter postal boxes for your business? Order in bulk from us and take advantage of our amazing discounts.
Need a large letter cardboard box by tomorrow? Don't panic as we offer next working day delivery as standard, so you can get your package out on time. Order before 11:45 am Monday-Friday and get same day despatch.