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    Postal Boxes

    Postal Box manufacturer, Caps Cases, based at Newmarket and Glasgow, offers a wide selection of competitively priced user-friendly packaging that can be purchased directly from the manufacturer. From the smaller sized mailers to larger parcel sizes all of our designs are tried and tested providing a safe and protective way of delivering your products via the postal system.

    Our state-of-the-art design and print facilities allow us to offer bespoke printed postal boxes, in the quantities you need at competitive price.

    Our packaging is 100% recyclable and all of our flexo inks are renewable and water based.

    It’s important to consider the cost of mailing your package, the Royal Mail size guide below is a useful tool to assist with this.

    If you would like a quote we’d love to hear from you on 01638 667326, or email sales@capscases.co.uk

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    Weight Guidance

    These rough guidelines below can help if you’re estimating the weight of your item.

    • Letter or greeting card – 30g
    • Standard DL (110mm x 220mm) envelope with 4 sheets of A4 – 44g
    • CD in bubble envelope – 130g
    • A4 envelope with 20 sheets of A4 – 160g
    • Mobile phone in bubble envelope – 180g
    • DVD in bubble envelope      – 190g
    • 400 page paperback book in bubble envelope – 310g
    • Pair of jeans – 500g
    • Glossy magazine in bubble envelope – 585g
    • Pair of trainers – 1kg


    Caps has a great reputation as a high quality printer, we can utilise either the digital process for small volume requirements or Flexo for larger quantities, we can print both inside and outside, to create a real consumer opening experience.


    Caps Cases has the ability to apply highly adhesive peel and seal hot melt closures as well as the more traditional finger lift tape.

    Want to talk to us face to face

    If you are looking for something bespoke? Arrange a call or site visit to meet with a dedicated account manager and designer to discuss your requirements in more detail. If you’re looking to develop a range of postal packaging, our in-house team of structural designers and sales team will guide you through the process from start to finish.

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