Large Letter Postal Boxes (Royal Mail PiP Boxes)

Large Letter Size Postal Boxes

What is a Large Letter PiP Box?

Large letter boxes or PiP boxes as they’re often called are a range of boxes in different sizes that have all been designed to fall within Royal Mail large letter sizes. This allows users of these boxes to send out items at a reduced rate of postage and can help save considerable sums of money on postage costs.

The Royal Mail large letter size was first introduced in 2006 as part of their new sized based pricing or Pricing in Proportion (PiP) as they called it. The changes redefined and re-categorised certain items of mail they carried. One of which was to introduce different pricing for standard & larger letters. Under the new rules they brought in, a large letter can be no larger than 353 x 250 x 25mm with a maximum weight of 750g.

A small letter / envelope — more properly described in RM terminology as a ‘Royal Mail standard letter’ on the other hand can only measure up to 240 x 165 x 5mm & weigh no more than 100g

We make our Large Letter Postal Boxes in popular & convenient sizes so you can choose a C4 postal box for A4 sized items, Large Letter C5 postal boxes are perfect for A5 items or as strong DVD postal boxes. Our Mini Large Letter PiP Boxes provide great protection for jewellery or just about anything else that will fit. Our Maxi PiP boxes are designed to push Royal Mail’s Large Letter size restrictions to the absolute maximum — helping you maximise your savings on postal costs. We even produce a DL size Large Letter Box, along with slim or narrow Large Letter Boxes for a range of suitable products.

So to start saving on your postage costs…

Check out our C4 PiP boxes, C5 PiP boxes, Mini PiP boxes, Maxi PiP boxes (largest large letter box allowed), DL PiP Boxes. Our Maxi Slim PiP box is designed for slimmer items but utilises the maximum length Royal Mail allows.

Have items too large for our Large Letter Boxes? Check our superb quality strong die cut Small Parcel Boxes…

Showing all 11 results

MINI Large Letter Postal Boxes – Royal Mail PiP Boxes (101mm x 101mm x 19mm)
Price range: £2.50 through £129.50 Select options This product has multiple variants. The options may be chosen on the product page
DL Large Letter Postal Boxes – Royal Mail PiP Boxes (210mm x 110mm x 19mm)
Price range: £2.50 through £217.45 Select options This product has multiple variants. The options may be chosen on the product page
QUICKPACK DL Large Letter Postal Boxes – Royal Mail PiP Boxes (217mm x 108mm x 20mm)
Price range: £2.50 through £290.15 Select options This product has multiple variants. The options may be chosen on the product page
C5 Large Letter Postal Boxes – Royal Mail PiP Boxes (218mm x 159mm x 19mm)
Price range: £2.50 through £352.15 Select options This product has multiple variants. The options may be chosen on the product page
QUICKPACK C5 Large Letter Postal Boxes – DVD Size Royal Mail PiP Boxes (218mm x 159mm x 19mm)
Price range: £2.50 through £175.25 Select options This product has multiple variants. The options may be chosen on the product page
C4 Large Letter Postal Boxes – Royal Mail PiP Boxes (320mm x 230mm x 21mm)
Price range: £2.50 through £266.85 Select options This product has multiple variants. The options may be chosen on the product page
MAXIMUM SLIM Large Letter Postal Boxes – Royal Mail PiP Boxes (333mm x 123mm x 20mm)
Price range: £2.50 through £176.89 Select options This product has multiple variants. The options may be chosen on the product page
MAXIMUM SIZE Large Letter Postal Boxes – Royal Mail PiP Boxes (345mm x 242mm x 21mm)
Price range: £2.50 through £202.15 Select options This product has multiple variants. The options may be chosen on the product page
MediaMax Mailers – Multimedia Large Letter Postal Boxes
Price range: £2.50 through £225.86 Select options This product has multiple variants. The options may be chosen on the product page
C4 / A4 ParcelMax Mailers – Royal Mail Large Letter Qualifying Corrugated Mailer (233mm x 320mm x 6mm)
Price range: £10.99 through £348.90 Select options This product has multiple variants. The options may be chosen on the product page
LARGE LETTER PiP Pricing In Proportion Postal Guides
Price range: £7.99 through £32.92 Select options This product has multiple variants. The options may be chosen on the product page

Showing all 11 results

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MINI Large Letter Postal Boxes – Royal Mail PiP Boxes (101mm x 101mm x 19mm)

DL Large Letter Postal Boxes – Royal Mail PiP Boxes (210mm x 110mm x 19mm)

QUICKPACK DL Large Letter Postal Boxes – Royal Mail PiP Boxes (217mm x 108mm x 20mm)

C5 Large Letter Postal Boxes – Royal Mail PiP Boxes (218mm x 159mm x 19mm)

QUICKPACK C5 Large Letter Postal Boxes – DVD Size Royal Mail PiP Boxes (218mm x 159mm x 19mm)

C4 Large Letter Postal Boxes – Royal Mail PiP Boxes (320mm x 230mm x 21mm)

MAXIMUM SLIM Large Letter Postal Boxes – Royal Mail PiP Boxes (333mm x 123mm x 20mm)

MAXIMUM SIZE Large Letter Postal Boxes – Royal Mail PiP Boxes (345mm x 242mm x 21mm)

MediaMax Mailers – Multimedia Large Letter Postal Boxes

C4 / A4 ParcelMax Mailers – Royal Mail Large Letter Qualifying Corrugated Mailer (233mm x 320mm x 6mm)

LARGE LETTER PiP Pricing In Proportion Postal Guides

FREE UK SHIPPING on orders over £30 (ex. VAT)