What Is a C4 Envelope and What Fits Inside?
A C4 envelope is a popular type of large posting envelope designed to hold full-size, unfolded documents. It easily accommodates 8.5” x 11” sheets, slim booklets, or reports, keeping papers smooth and professional-looking. This medium-size envelope is also excellent for no-fold document envelopes, making it a versatile choice.
Common Business Uses for C4 Envelopes
C4 envelopes are a staple in professional settings because they’re versatile and spacious. Businesses rely on them for sending reports, proposals, presentations, and client packets without folding or creasing important documents. They’re also ideal for distributing marketing collateral like brochures or sales kits at events or trade shows. Companies across industries, from legal and finance to creative agencies, choose these large posting envelopes to ensure materials arrive neat and professional, leaving a strong impression on clients and partners.
Why Choose C4 Envelopes Over Other Sizes?
When it comes to selecting the right posting option, C4 envelopes offer a perfect balance of size and protection. Unlike smaller envelopes that require folding documents, these envelopes are essential when you need a no-fold option that protects contents and makes a polished impression. Their larger dimensions make them ideal for sending full-page reports, contracts, and catalogues without damage.
Common Business Uses for C4 Envelopes
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Ideal for sending important documents like contracts, proposals, and legal paperwork that need protection.
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Perfect for posting marketing materials such as catalogues, brochures, and leaflets to keep them flat and crease-free.
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Suitable for shipping oversized reports or presentation folders without folding.
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A trusted option for office post rooms and professional correspondence across various industries.
Document Types That Work Best with C4 Envelopes
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Legal documents and contracts that require flat, crease-free posting
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Full-page reports, presentations, and proposals without folding
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Large brochures, catalogues, and marketing materials needing extra space
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Blueprints, technical drawings, and architectural plans
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Photographs and artwork that need protection during shipping
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Business correspondence that benefits from a professional oversized envelope
Material and Seal Options for C4 Envelopes
C4 envelopes are available in various materials and seal types to suit different business needs. Selecting the right combination ensures your documents stay protected, while also aligning with your company’s preferences for durability and sustainability.
Seal types typically offered are:
Common material options include:
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Sturdy kraft paper
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Smooth white wove paper
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Recyclable eco-friendly paper
Choosing the right materials and seals helps maintain document security and supports your brand values.
Custom Printing Options for Branding
Custom printing turns plain C4 business envelopes into branded marketing tools. Adding logos, colours, or messages boosts professionalism and visibility. All Colour Envelopes offers digital and flexographic printing for crisp, high-quality results that help your post stand out and reinforce your brand.
Where to Buy Bulk C4 Envelopes for Offices
Businesses looking for quality posting solutions or durable document envelopes in bulk will find All Colour a trusted partner. Buying in bulk helps ensure cost savings, reliable stock, and fast shipping, key for keeping office operations smooth.
Whether you need sturdy mailers, vibrant colours, or secure closures, All Colour has excellent choices, including:
C4 Manilla Board Back 120gsm Peel & Seal Pocket Envelopes – Perfect for shipping thicker materials or delicate contents with added protection.