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Large Letter Postal Boxes (Royal Mail PiP Boxes)

This section of our website contains our range of Large Letter Postal boxes or Pricing in Proportion Boxes (Royal Mail PiP Boxes) as they are now more commonly known.

Back in 2013 when Royal Mail decided to change their pricing structure for smaller sized items, DEFENDAPACK had already manufactured and supplied a large range of superb quality PiP postal boxes specifically designed to qualify as large letters when shipped with Royal Mail. Thus saving thousands of our customers huge amounts of money on their postage and packaging costs.

As time progressed, we developed even more large letter postal boxes such as the Maxi PiP Box, Quick Pack PiP Boxes, DL Size PiP Boxes, and many others for a whole range of different products.

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Shipping Rates & Upgrades

 All of our prices are shown Inclusive of VAT and Free Shipping to MOST UK Mainland addresses, however, some Bulk Buy items, deliveries to offshore addresses & a very small number of Northern Scottish Postcodes will incur a shipping charge or surcharge, please see below, so no nasty surprises for you at the checkout!

Please note that we cannot deliver to PO boxes.

Please check here for Offshore and Scottish Highlands shipping upgrades

If you require a faster delivery, click here for timed shipping upgrades

If you are ordering outside of the UK, please click here to see our international rates


SPECIAL OFFER - £10.99 for Saturday Delivery