Large Letter PiP Postal Boxes

PiP (Pricing in Proportion) postal boxes have been specifically designed to help maximise permitted volume for contents, whilst minimalising overall packaging and shipping costs.

PiP (Pricing in Proportion) means that items sent with Royal Mail are subject to a charge as determined by the measurements of the package. 

These C4 and C5 PiP boxes fall into the Large Letter category, meaning that the maximum external dimensions must be 353 x 250 x 25mm (and the total weight must not exceed 750g). 

With a seemingly evermore competitive market, it’s important that our customers reduce their shipping costs as much as possible so that they can remain competitive. The difference between paying for a Large Letter as opposed to a Small Parcel can amount to a considerable saving over a period of time, particularly where high volumes are being despatched. Our PiP Large Letter Postal Boxes are ideal for sending CD’s, DVD’s, Mirror & Glass items, Prints & Pictures, Frames, and many other flat items. Manufactured from strong, rigid corrugated board these mailers offer excellent protection – and benefit from multiple layers of board around the sides when the box is assembled.

Our boxes are environmentally friendly: they contain a high percentage of recycled material, and we work closely with our manufacturing partners who are learning to produce stronger boxes using less raw materials. Corrugated cartons can be re-used multiple times, and when they finally reach the end of their life they are fully recyclable. We work with suppliers who have invested heavily in their machinery and processes to create highly efficient and environmentally-friendly systems – helping corrugated cardboard to be the cleanest, greenest packaging material on earth.

  • Lightweight.
  • Economical.
  • Fit through standard UK letterbox.
  • Strong, rigid mailers offering great protection.
  • Quickly and easily assembled.
  • Quickly sealed with a strip of tape or packing label.
  • Fit within Royal Mail’s Large Letter charges.
  • Environmentally friendly.
  • Pure Kraft outer.
  • High strength micro fluting.
  • Attractive, professional finish.

We have a wide variety of boxes specifically designed for sending packages via Royal Mail and via couriers, many of which will be added here soon. In the meantime please give our friendly sales team a call on 01209 204 777 or visit our contact page and send us an enquiry.

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from £3.70 All Prices ex VAT
Specification Batch Discount Purchase
CodeLengthWidthHeightSizePriced In1-56-1112-2425-4445+ QTY Total

All prices exclude VAT

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C5PIP
C5 Pip Postal Box 250 x 165 x 20mm (9.8 x 6.4 x 0.8 inches) 20 Pack https://www.carterspackaging.com/media/5_2627_E300_PIP_Postal_Boxes_6655ae.jpg PiP (Pricing in Proportion) postal boxes have been specifically designed to help maximise permitted volume for contents, whilst minimalising overall packaging and shipping costs.
250mm 165mm 20mm C5 Pack ( 20 ) £4.75£4.50£4.20£3.95£3.70 £0.00
C4PIP
C4 PIP Postal Box 324 x 230 x 20mm (12.7 x 9 x 0.8 inches) 20 Pack https://www.carterspackaging.com/media/5_2627_E300_PIP_Postal_Boxes_6655ae.jpg PiP (Pricing in Proportion) postal boxes have been specifically designed to help maximise permitted volume for contents, whilst minimalising overall packaging and shipping costs.
324mm 230mm 20mm C4 Pack ( 20 ) £7.80£7.50£7.00£6.50£6.00 £0.00