Glasgow

Glasgow High-Capacity Gusseted Kraft Envelope – Expanding Paper Mailer

The Glasgow gusseted kraft envelope is a heavy-duty expanding paper mailer designed for bulkier flat items, e-commerce shipping and professional document packaging. Built with side and bottom gussets, this high-capacity envelope offers the perfect middle ground between a standard envelope and a shipping box.

A smart solution for bulky flat items

Unlike traditional flat envelopes, the Glasgow envelope expands to accommodate volume:

• Books, catalogues and magazines

• Thick document stacks and files

• Artwork, prints and framed items

• Retail products and multi-item orders

It adapts to content thickness while maintaining a clean, professional presentation.

Designed for real-world usage

This expanding kraft mailer is widely used across industries:

• E-commerce businesses for book and media shipping

• Art professionals for prints and photography

• Corporate offices for confidential documents

• Retail stores as an alternative to shopping bags

The gusset structure allows the envelope to expand up to 11 cm, securely holding items without deformation.

Solving everyday packaging challenges

Standard envelopes tear or fail with bulky content. Boxes, on the other hand, take space and cost more. The Glasgow envelope solves both:

• Eliminates the need for oversized boxes

• Reduces shipping volume and costs

• Prevents items from shifting during transit

• Provides a secure and structured fit

Less waste, better protection, smarter logistics.

Strong and protective material

Made from high-quality kraft paper, this envelope delivers:

• Excellent tear resistance and durability

• Reliable protection for heavy contents

• A structured feel that maintains shape during handling

It’s strong enough to carry weight while remaining flexible for easy use.

Secure closure for safe delivery

The large top flap (8–10 cm) ensures:

• Strong, secure sealing

• Protection from dust and external elements

• Added privacy for sensitive documents

Because losing paperwork or damaging products is rarely good for business.

Eco-friendly packaging choice

This paper-based mailer is:

• 100% recyclable

• A sustainable alternative to plastic mailers

• Ideal for eco-conscious brands

Packaging that protects both your products and your brand image.

Premium finishes for professional presentation

Available in:

• Natural Kraft – organic and authentic look

• Havana White Duplex – clean, modern and premium finish

Suitable for both logistics efficiency and high-end presentation.

Available sizes for different needs

• 35 + 8 × 26 × 8 cm – documents, books

• 41 + 8 × 34 × 8 cm – magazines, frames

• 56 + 10 × 44 × 11 cm – artwork, large orders

From standard shipments to oversized items, it scales easily.

Key features

• High-capacity gusseted kraft envelope

• Side and bottom expansion up to 11 cm

• Durable and tear-resistant paper

• Large secure closing flap

• Eco-friendly and recyclable

• Ideal for e-commerce, retail and office use

A practical and cost-efficient packaging solution

The Glasgow expanding envelope combines capacity, protection and efficiency, making it the ideal solution for businesses handling bulky flat products without the need for oversized packaging.

An envelope that behaves like a box… but takes up less space and costs less. Finally, something in packaging that actually makes sense.