This is because the reduced size C5 envelope qualifies as a standard or small letter size under Royal Mail ‘Pricing in Proportion’ rules. There are many different types of packaging envelopes, so you may be asking yourself which ones you need.

All sizes of our white board back envelopes are approximate and subject to a manufacturing tolerance of +/- 5mm.Traditionally used for sending documents, certificates and paperwork, this product allows for small and flat objects to be posted; these include, papers, documents, letters, cards, brochures etc. Reach out to us today and discover the endless possibilities of enveloping your messages with a touch of creativity!

Our brown board backed envelopes are manufactured with a strong 120gsm front paper and 550gsm grey board backing to keep a range of documents/items free from damage during transit. Board backed envelopes are a must-have item if you’re sending out important documents or any item that needs to be protected from folding or creasing. Custom pricing inquiries are also welcome from commercial resellers and other regular or large-scale users of our products, or when a similar item needs to be customized in some way.

Our board back envelopes are produced with a cardboard back and a secure peel and seal strip that will keep your items safe and well protected during transit. The easy peel and seal strip ensures items stay secure and private, simply place the contents inside the envelope, remove the peel strip and seal to close. Our board backed mailers also come in multiple sizes and popular formats such as C3, C4, C5, and C6 envelopes. Match your brand and products to your packaging needs and stand out from the crowd in a new way when it comes to boxes.

You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. Eco Friendly Eco-friendly packing bags, biodegradable void fill, recycled mailing bags, eco-friendly packaging. For extra peace of mind, our range includes Do Not Bend envelopes with their printed message which gives in-transit instructions to ensure your items arrive in the best condition, and plain board backed envelopes.

These strong and high-quality envelopes made from 125gsm manilla paper and a 600gsm card back, feature a peal and seal closure strip and a Please Do Not Bend print on front provide full protection and zero visibility of the contents of the envelopes. All of our brown envelopes are printed with a “Please Do Not Bend” message on the front for maximum protection, instructing handlers not to bend or fold and ultimately damaging items inside. Each cardboard mailer can hold fragile contents such as contracts, photos, certificates, maps, and other important documents that should not be bent.

Increase your peace of mind and be confident that any important document will be delivered securely and make the right first impression. This notice is a standard in card backed envelopes to remind others to handle the mailer envelopes with care and refrain from folding or bending them because of the delicate contents inside. A strong paper envelope with a 600gsm rigid backing card ensures excellent protection against folding, bending and damage in transit and these carefully chosen materials also keep weight to a minimum reducing your costs. By using pallet wrap, you can be assured that your goods will be distributed in a stable, covered and waterproof condition.Ideal for use in the office or home; board backed envelopes (also known as hard back envelopes), are a common product used to mail and protect important contents country-wide.