Best 25 mm Envelopes of 2025
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These 25 mm envelopes are an essential item for any office or home workspace. Designed to hold documents and letters, these envelopes come in a range of sizes to suit your needs. They are made from high-quality materials and are durable enough to withstand the rigours of everyday use. Whether you need to send important documents to clients or simply want to organise your paperwork, these envelopes are an excellent choice. With their sleek design and practical functionality, they are sure to be a valuable addition to your stationery collection.
At a Glance: Our Top Picks
#TOP 1
9.9
#TOP 2
9.8
#TOP 3
9.6
Top 10 25 mm Envelopes
5 Star C4 Peel and Seal Envelopes
The 5 Star C4 Envelopes are designed for convenience and efficiency. With 25mm V-base style gussets, they provide ample space for thicker documents, making them perfect for sending multiple pages. The peel and seal closure allows for quick and secure sealing, saving you time when preparing mail. Each pack contains 125 envelopes, ensuring you have enough for all your mailing needs. Measuring 324x229x25 mm, these envelopes are ideal for standard-sized documents, offering a professional presentation for your correspondence.
HSD C4 Expanding Manilla Envelopes A4
The HSD C4 Manilla Envelopes are designed for your expanding A4 needs. With dimensions of approximately 324mm x 229mm x 25mm, these envelopes offer ample space for documents without the worry of damage in transit. Made from sturdy 130gsm manilla, they keep your contents safe while ensuring minimal weight for postage costs. Fast dispatch is a bonus, so you won't have to wait long to receive your supplies. These envelopes are perfect for anyone needing reliable and efficient mailing solutions.
Blake C4 Peel & Seal Envelopes - 125 Pack
The Blake C4 Envelopes feature a secure peel and seal closure, which makes them easy to use while providing extra security for your contents. Made from high-quality 130gsm paper, these envelopes ensure durability and a professional look. With a V-bottom gusset, they can accommodate thicker items like books and brochures with ease. The 25 mm capacity is perfect for catalogues, allowing you to send multiple pages without worry.
Blake Gusset Pocket Peel & Seal Envelopes
The Blake C4 Envelopes are perfect for your catalogues, books, brochures, and more. The peel and seal feature allows you to easily secure your items, saving you time and effort. Made from high-quality paper, these envelopes provide durability and a professional appearance. With a gusset pocket design, they offer extra space, accommodating thicker materials without compromising on style or functionality. These envelopes are a practical choice for any mailing needs.
Gusset Envelopes C5 Peel and Seal Pack
The Gusset Envelopes Pack is perfect for storing and sending bulkier items. With a generous gusset size of 25mm, these envelopes can accommodate thicker contents without compromising on quality. The Peel & Seal feature ensures that sealing envelopes is quick and hassle-free, which is particularly useful for larger tasks. Made from 120gsm paper, these envelopes provide added thickness, giving you peace of mind that your items are well-protected during transit. Additionally, they are suitable for overprinting, allowing for personalisation or branding.
Gusset Envelopes C5 Peel and Seal 120gsm
The Gusset Envelopes C5 are perfect for storing and posting bulkier items. Their 25mm gusset allows for greater capacity, making it easier for you to send multiple documents or thicker materials without worrying about tearing. The peel and seal feature offers a quick and efficient way to secure your items, saving you time on larger tasks. Made from 120gsm paper, these envelopes provide added thickness and durability, ensuring your contents are well protected during transit. They are also suitable for overprinting, allowing for customisation.
Q-Connect Manilla Peel and Seal Envelopes Pack of 100
The Q-Connect Manilla Envelopes are practical for your mailing needs. With a generous 25mm gusset, these envelopes can accommodate thicker documents, ensuring you can send multiple sheets without worry. Made from heavyweight 120gsm paper, they provide durability and protection for your contents. The convenient peel and seal closure allows for quick sealing, saving you time when preparing mail. Measuring 381 x 254mm, these envelopes are spacious enough for various items, making them a versatile choice for both personal and professional use.
New Guardian Heavyweight Peel and Seal Envelopes
The New Guardian Envelopes are designed with a strong two-tone manila paper that provides excellent protection for your important mail. With a generous size of 324x229mm and a 25mm gusset, they can easily accommodate larger documents. The subtle two-tone sheen finish not only enhances presentation but also adds a touch of professionalism. Additionally, the peel & seal closure ensures a secure seal, giving you peace of mind that your contents will remain safe and intact during transit.
Mailer Envelopes for A4 Items - 25 Pack
The A4 Mailer Envelopes are lightweight yet sturdy, designed for mailing flat items like books, DVDs, and brochures. Their innovative E-flute cardboard allows you to expand the envelope's capacity up to 50mm, accommodating various thicknesses with ease. You will appreciate the convenience of the pre-creased design, which simplifies packing your items securely. With a peel-and-seal strip, these envelopes ensure your contents remain safe during transit, making them a reliable choice for your mailing needs.
DL Heavy Duty Expanding Peel & Seal Envelopes
The DL Expanding Envelopes are crafted from heavy-duty 125gsm material, providing excellent strength and durability for your mailing needs. With expanding sides, these envelopes accommodate bulkier items, making them perfect for sending papers, clothes, and other unbreakable items. The quick and easy peel & seal strip ensures a strong, hassle-free closure, saving you time and effort when preparing your mail. Additionally, these envelopes are a cost-effective alternative to plastic bags, allowing you to write directly on them for easy addressing.
Frequently Asked Questions (FAQs)
1. How big is a size D envelope?
DL ENVELOPE SIZE GUIDE A standard DL envelope measures 110mm x 220mm. This is what most people consider a "letter envelope" and fits A4 paper folded into thirds. Business 'With Compliments' slips are designed to fit inside a DL envelope and usually measure 210mm x 99mm.
2. What size is a B4 envelope?
A B4 envelope measures 250 x 353mm. Slightly larger than C4 envelopes, it fits unfolded A4 paper and is ideal for thicker documents.
During our 25 mm envelope research, we found 56 25 mm envelope products and shortlisted 10 quality products. We collected and analyzed 8,489 customer reviews through our big data system to write the 25 mm envelopes list. We found that most customers choose 25 mm envelopes with an average price of £20.98.
The 25 mm envelopes are available for purchase. We have researched hundreds of brands and picked the top brands of 25 mm envelopes, including 5 Star, Home Supplies Direct, Blake, ODL Packaging, Q-Connect. The seller of top 1 product has received honest feedback from 1,128 consumers with an average rating of 4.0.
Jordan Akthar owns one stationery store in Bradford, and another in Derby. He started with a corner bookshop, and now the rest is history. He is often found in his stores taking count of inventories of books and stationery. Jordan also likes to write, and this drove his passion for writing articles on stationery maintenance. He owns a blog, where in his free time, he would write DIY tips on how you can recycle and refine your stationeries.