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Royal Mail Size Packaging

Royal Mail Large Letter & Parcel Compliant Packaging

(41 products)

Looking for packaging that meets official Royal Mail Large Letter & Small Parcel measurements? Our mailers are designed to maximise delivery space while staying within the strict Royal Mail size limits.

What Are Royal Mail Large Letter & Small Parcel Measurements?

  • Royal Mail Large Letter measurements: 353 x 250 x 25mm (up to 750g)
  • Royal Mail Small Parcel size: 450 x 350 x 160mm
  • Royal Mail Letter size: 240 x 165 x 5mm

Our range of large letter and small parcel compliant packaging has been tried, tested, and trusted by the UK’s biggest online retailers to save time, reduce costs, and eliminate postage errors.
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Learn More About Our Bespoke Packaging Options

Tell us a little about your project, and we’ll get back to you with ideas, samples, and a tailored plan to bring your packaging vision to life. Request a free bespoke packaging consultation today and start building packaging made just for you!

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