DL Envelopes

Product Filters
Size
Colour
Material Weight
Flap
Filter

High-Quality DL Envelopes

Browse our range of premium DL envelopes, perfect for both professional and personal use. DL envelope measurements are 110mm x 220mm, making them an ideal size for business letters, invitations, marketing materials and stationery. They are specifically designed to fit an A4 sheet folded into thirds (tri-fold) or an A5 sheet folded once (bi-fold).

Our UK-manufactured DL envelopes are available in a huge range of colours, weights, finishes and flap types (including gummed and peel and seal). So whether you need to purchase bulk DL envelopes for corporate communication or require high-quality coloured DL envelopes for a special event, you can always rely on The Envelope People for sensible pricing.  Prices start from just £0.04 each.

The Envelope People also offers a custom DL envelope printing service, with high-quality in-house printing. This allows you to showcase your logo, brand colours, and custom graphics while maintaining a consistent corporate identity. Our custom DL envelope printing service helps ensure your branding and corporate identity are reflected in every mailing.

Bulk DL Envelopes for Business Correspondence

While our range of C4–C7 envelopes is mainly used for greeting cards and invitations, the long, sleek shape of DL envelopes is naturally suited to sending formal letters, invoices, bills, contracts, and other types of business correspondence. 

The Envelope People offers a wide range of coloured and white DL envelopes, available in multiple paperweights, at highly competitive prices. We also offer recycled DL envelopes, which are ideal for businesses looking to improve their sustainability. Our volume discount structure is designed to reward higher-volume purchases, giving businesses and bulk purchasers access to cost-effective DL envelopes.

Premium DL Envelopes for Marketing and Promotional Materials 

Our wide range of DL envelopes is perfectly suited for direct mail campaigns, brochures, flyers, leaflets and promotional offers. The Envelope People offers DL envelopes in a huge variety of vibrant colours, from Baby Blue to Oxford Blue, making it easy to find the perfect coloured DL envelope no matter your brand’s colour scheme. 

Top-Quality DL Envelopes for Invitations and Personal Correspondence

As well as being commonly used for business and marketing correspondence, DL envelopes can also be used for invitations, RSVPs and rectangular greeting cards. 

Our DL envelopes are manufactured from premium-quality paper stock, with 100gsm and 120gsm options available.

DL envelopes are ideal for long-format invitations, RSVP cards, greeting cards, thank you notes and formal event stationery. Our DL envelopes provide a professional and polished presentation while keeping your mailings safe and secure. 

The Envelope People offers DL envelopes in a huge range of shades, colours and finishes, including pearlescent, textured and metallic finishes which are perfect for adding an elegant touch to your invitations, cards or personal correspondence.

In addition to DL envelopes, we also offer a wide range of crafting supplies, including card blanks, craft card, craft paper, cello bags and DIY wedding stationery, making The Envelope People a one-stop shop for all your card-making needs. 

DL Envelopes FAQs

A DL envelope is a long, narrow envelope that is considered the standard size for business, formal and personal correspondence. DL envelopes measure 110mm x 220mm. This standard DL envelope size is designed to fit an A4 sheet of paper folded into thirds. They are available plain or with a transparent window on the left side to display the recipient's address.

The standard DL envelope size is 110mm x 220mm (11cm x 22cm). This size of envelope is designed to fit a sheet of A4 paper folded horizontally into thirds.

Read our ‘Envelope Size Guide’ for a full breakdown of different envelope sizes.

If you're wondering what paper size fits a DL envelope, an A4 sheet folded into thirds is the standard format. DL-sized compliment slips and A5 sheets folded once will also fit comfortably.

DL is generally understood to refer to "Dimension Lengthwise" and is often associated with the term "DIN Lang", meaning "standard long" in German. The acronym describes the envelope's long, rectangular shape, which allows it to perfectly house an A4 piece of paper folded into thirds.

DL envelopes are standard long-format envelopes commonly used for business correspondence, direct mail, invitations and personal stationery.

Here’s an overview of the most common uses for DL envelopes:

Business & Corporate Use - DL envelopes are a staple in offices and businesses, perfect for sending professional documents such as:
Letters & Correspondence – The ideal size for official communications.
Invoices & Statements – Commonly used for financial documents and billing.
Marketing Materials – Excellent for direct mail campaigns, flyers, and brochures.
Invitations & Special Events - DL envelopes add a touch of elegance to any occasion. They’re a stylish choice for:
Wedding Invitations – Perfect for long-format invites or RSVP cards.
Corporate Events & Conferences – Great for formal event details and invitations.
Personal Celebrations – Ideal for birthdays, holiday greetings, and thank-you notes.
Greeting Cards & Personal Stationery - While a less popular choice than C-Series envelopes, DL envelopes can be a stylish option for cards and stationery:
For custom greeting cards, handwritten letters and personal notes, DL envelopes provide a professional, well-presented look.
If you’re in the business of stationery, premium DL envelopes can elevate your products and leave a lasting impression.

At The Envelope People, we offer DL envelopes in a variety of styles, finishes, and colours to suit every need, including:

Classic White DL Envelopes
Clean, professional, and perfect for business use.
Available in multiple paper weights, from standard to premium quality.
Coloured DL Envelopes
A wide selection of vibrant colours to make your mail stand out.
Great for branding, personal correspondence, or special occasions.
Luxury & Metallic DL Envelopes
Choose from pearlescent, textured, or metallic finishes for added elegance.
Popular for weddings, upscale business communications, and premium stationery.
Recycled & Eco-Friendly DL Envelopes
Sustainable, biodegradable, and recyclable options for the environmentally conscious.
Ideal for businesses and individuals looking to reduce their carbon footprint.

We offer DL envelopes with a range of sealing options to best suit your needs:

Gummed DL Envelopes – A traditional, moisture-activated seal.
Self-Seal DL Envelopes – Easy press-and-seal closure for quick, hassle-free use.
Peel & Seal DL Envelopes – A strong adhesive strip for secure sealing.