They are high quality boxes and very durable considering their single wall structure. The sizes are listed in MM (length x width x height). We offer the following size White Postal Boxes.Internal dimensions (5.5" x 5" x 2) 140mm x 130mm x 50mm. Internal dimensions (8" x 5" x 2) 200mm x 120mm x 50mm. Internal dimensions (10" x 8" x 2) 250mm x 210mm x 50mm. Internal dimensions (10.5" x 7" x 3) 280mm x 180mm x 80mm. Orders received and paid for by 2pm Monday to Friday (excluding public holidays) will be dispatched the same day. Postcodes include IV, All KW, PA20-PA78, PH4 - PH50, All HS, All ZE, All IM, All BT. VAT Number: 238 2749 83. This item is in the category "Business, Office & Industrial\Material Handling\Packing & Shipping\Shipping & Moving Boxes". The seller is "schottpackaging" and is located in this country: GB. This item can be shipped to United Kingdom.