Buying guides
Bubble envelope sizes – everything you need to know
Envelopes are a popular choice for businesses and individuals who need to send items securely via mail or parcel locker. However, choosing the right envelope size can be a challenge if you are not familiar with the different formats and dimensions available. In this article, we'll explain how to read the bubble envelope format and what you need to know about the inside and outside dimensions of these envelopes.
Bubble envelopes are categorized by size, and each size is represented by a combination of letters and numbers. The format of bubble envelopes is similar to the format of sheets of paper, but they use numbers instead of numbers. For example, you may see envelopes labeled A11, B12, C13, D14, etc.
The standard size of bubble envelopes includes 11 sizes, starting from the smallest A11 and ending with the largest K20 and CD. Each size has different dimensions, so it is important to know which size you need to fit the item you want to ship. Here is a breakdown of the dimensions and typical uses of each:
Bubble envelope A11: 120x175mm
This size is perfect for small items such as electronic parts or remote controls, and can also fit A7 or smaller sheets.
Bubble envelope B12: 140x225mm
B12 bubble mailer can hold prints or postcards in A6 size, as well as small calendars.
C13 bubble mailer: 170x225mm
This size is ideal for A5 prints, books, notebooks, pen cases, and small electronic accessories.
D14 bubble mailer: 200x275mm
Similar to size C13, D14 envelopes can hold A5 prints, non-standard books, and clothing accessories.
E15 bubble mailer: 240x275mm
This size is suitable for A5 prints, as well as for thin books, clothing accessories, and other small items. Therefore, items such as documents, photos, electronic parts, or keys can comfortably fit in an E15 bubble mailer.
F16 bubble mailer: 240x350mm
F16 envelopes can fit thin A4 prints, thick books printed in smaller formats and hardcover books.
G17 bubble envelope: 250x350mm
It is slightly wider than the F16 envelope, making it suitable for thicker A4 prints, thick books, frames and photo albums. It can also accommodate other items that fit within its dimensions, e.g. clothing accessories, thin boxes or flat objects.
Bubble envelope H18: 290x370mm
It is large enough to hold a variety of items, including clothing, e.g., sweatshirts, books, photo albums, frames, and other similar items. Also suitable for A4 prints, large brochures and catalogues. The H18 envelope is an excellent choice for shipping larger and bulky items while protecting them from damage during transit.
Bubble envelope I19: 320x455mm
This is a larger envelope suitable for placing various items inside. Some of the items that can fit in the I19 bubble envelope are large photo frames, large prints, flat-folded clothing such as shirts and sweatshirts, A3 flat prints and other similar items. Due to its large size, the I19 envelope can also be used to pack multiple smaller items or documents at once, making it a versatile packaging option.
Bubble envelope K20: 370x480mm
This size is ideal for packaging larger items such as A3 prints, flat-fold clothing, large photos, albums, frames or other bulky items that are too large for smaller envelopes. Examples of items that can fit in a K20 bubble envelope include large paintings or works of art, posters, oversized documents, clothing items such as jackets or coats, and even small household items such as kitchenware or toys.
CD bubble envelope: 200x175mm
The bubble envelope for CDs is similar in size to the A11 bubble envelope, but slightly wider, measuring 200x175mm. This makes it suitable for packaging small, flat items such as CDs, DVDs, jewelry or other small items that will fit within its dimensions. It can also fit small, flat boxes or envelopes.
Tips
When it comes to choosing the right envelope size, it is important to keep the inside and outside dimensions of the envelope in mind. Manufacturers usually use both dimensions or provide one of them because the envelopes are glued at the ends. This means that there is slightly less space to pack than the external dimensions would suggest. This difference is usually between 1-3 cm. Additionally, the thickness of the adhesive strip may vary depending on the manufacturer, so the internal dimensions of bubble envelopes may vary even if the external dimensions are the same. It is important to choose the right size for your item. You don't want the item to be too loose in the envelope as this may cause damage during shipping. Therefore, always choose an appropriately sized envelope that will fit your item well and provide it with adequate protection.
In summary, bubble envelopes are a convenient and safe way to ship items via post. Knowing the format and size of the envelope you need is important to ensure your item arrives safely and securely.
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