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PIP Boxes

Pricing in Proportion (or PIP) boxes are ideal boxes for ecommerce postal orders where you need to keep your postage costs as low as possible. Ideal for couriering and protecting small items, these parcel boxes come in different sizes, some of which will fit through the 25mm Large Letter slot (please always confirm with your local post office on prices).

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Why Buy PIP Boxes from Transpack?

  • Various box sizes available
  • Minimise postal costs withpostal boxes
  • Made from lightweight, strong board saving on postage weight
  • Our postal boxes are made from at least 60% recycled material
  • Easy to fold and make up

Watch our video about "PIP Boxes" - use the full screen option to see in the best quality.

Read transcript

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  1. Small Brown Postal Box | A6 - 178 x 130 x 22mm
    FBBPIP1
    From: £0.0000 for 50
    Out of stock
  2. NEW
    Mini Brown Letterbox Postal Box | 101 x 101 x 19mm
    FBBPIP101D
    From: £10.0000 for 50 As low as From: £0.1500
  3. NEW
    Small Letterbox Brown PIP Postal Box | Royal Mail Compliant | A6 - 160x110x19mm
    FBBPIP1D
    From: £12.0000 for 50 As low as From: £0.1700
  4. NEW
    Letterbox Brown Postal Box A5 | 225 x 160 x 19mm
    FBBPIP2D
    From: £13.5000 for 50 As low as From: £0.2200
  5. Printed Small Brown PIP Postal Box | DOODLE DESIGN | A5 - 239 x 180 x 22mm
    FBBPIP2PTDDOO
    From: £11.2500 for 25 As low as From: £0.3200
  6. Printed Small Brown PIP Postal Box | ABSTRACT FACES DESIGN | A5 - 239 x 180 x 25mm
    FBBPIP2PTDFACE
    From: £11.2500 for 25 As low as From: £0.3200
  7. Printed Small Brown PIP Postal Box | GARDEN DESIGN Box | A5 - 239 x 180 x 22mm
    FBBPIP2PTDGW
    From: £11.2500 for 25 As low as From: £0.3200
  8. Printed Small Brown PIP Postal Box | TEXTURES DESIGN Box | A5 - 239 x 180 x 22mm
    FBBPIP2PTDTEX
    From: £11.2500 for 25 As low as From: £0.3200
  9. Small Brown PIP Postal Box | A4 - 322 x 228 x 22mm
    FBBPIP3
    From: £22.0000 for 50 As low as From: £0.3200
  10. NEW
    Letterbox Brown Postal Box | A4+ - 320 x 230 x 19mm
    FBBPIP3D
    From: £22.0000 for 50 As low as From: £0.3900
  11. Postal Box | Eco-friendly Small Parcel Box | A3 - 419 x 338 x 72mm
    FBBSPB1613
    From: £65.0000 for 50 As low as From: £1.1800
  12. Small White PIP1 Postal Box | Eco-friendly E-Commerce Box Large Letter Size | A6 - 160 x 110 x 20mm
    FBWPIP1
    From: £12.5000 for 50 As low as From: £0.1800
  13. Small White PIP Postal Box | Large Letter Postal Box | 222 x 160 x 20mm
    FBWPIP2
    From: £14.0000 for 50 As low as From: £0.2000
  14. Small White PIP Postal Box | Large Letter Boxes | 322 x 229 x 20mm
    FBWPIP3
    From: £22.5000 for 50 As low as From: £0.3300
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PIP Boxes Video Transcript

PIP Boxes are specifically designed to fit through the 25mm slot that Royal Mail class as a large letter. This minimises your postal costs and the boxes are quick to put together as well as being lightweight and durable. Simply fold along the pre-defined creases, lock them into place using the tabs, and then secure them with tape like this.


The boxes are sent to you flat packed for easy storage and delivery. They come in three sizes, all of which are guaranteed to fit through the large letter slot. The total package must weigh less than 750g.


Order online or by telephone before 3pm and we aim to despatch your order the same working day. Orders over the value of £55 (excl Vat) are delivered free of charge. For any other queries please call our customers service helpline on 02380 869999 or visit our website and our friendly staff will be more than happy to help you.

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