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Small cardboard postal box features

• Designed to fit Royal Mail post boxes and household letter boxes.
• External measurements fit Royal Mail's 'Large Letter' guidelines.
• Economy boxes that help you control your postage spending.
• Simple to pack - designed for maximum postal efficiency.
• Made from strong but very lightweight cardboard.
• Perfect for shipping a selection of small, flat products.
• Supplied in handy packs of 50 boxes.
• Delivered to you flat, these boxes can quickly and easily be folded into shape.
• 100% reusable and recyclable.

Small cardboard postal box - internal dimensions

• Internal length: 101mm (4")
• Internal width: 101mm (4")
• Internal height: 20mm (1")

Small cardboard postal box - external dimensions

• External length: 120mm (4")
• External width: 105mm (4")
• External height: 22mm (1")
• Packed in 50s

Please note: Imperial sizes provided to the nearest inch.

Small cardboard postal box - packing warning

This box has been designed to fit Royal Mail's 'Large Letter' guidelines, when constructed correctly and not over-filled.

Please take care when packing the box that you do not accidentally push its external dimensions or weight beyond these guidelines.

If a box is overfilled, Polybags takes no responsibility for any extra postal charges issued.

Small cardboard postal box - how to dispose

This box is made from 100%-recyclable cardboard. It is suitable for collection in regular kerbside collections or at recycling points.

Please check our handy recycling locator tool for information on your local area.