Capacity Book Mailers - Premium Corrugated - 278x400mm

Our cardboard capacity book mailers (278x400mm) are gusseted which enables them to act as a small parcel postal box when larger items are inserted into them. These premium corrugated capacity book mailers are built for strong, heavy duty use and offer great protection to products contained within. Designed with a micro F flute feature, these capacity book mailers are puncture-resistant to protect your goods in transit but come with an easy open tear strip.

The 278x400mm premium corrugated capacity book mailer is designed for heavy duty mailing loads. If you are sending light to medium duty items, then our standard solid board capacity book mailers may be more suitable and cost effective. Click here to view our 278x400mm Standard Solid Board capacity book mailers & envelopes.

Pricing in Proportion (PiP) Sizes

Our cardboard capacity book mailers & envelopes can be identified using Royal Mail's Pricing in Proportion index. Our 278x400mm sized capacity book mailer specifically fall into the Royal Mail 'Small Parcel' category.

Key features of our 278x400mm Premium Corrugated Capacity Book Mailers

• Our 278x400mm capacity book envelope-like mailers adhere to Royal Mail's PiP guidelines, so you can accurately calculate your postage costs.
• For added flexibility, strength and protection, our premium corrugated capacity book mailers come with a puncture-resistant micro F flute and have a strong peel & seal closure.
• Scored for increased capacity – up to 40mm.
• Made from recyclable material.

Product Details

• Colour: Brown.
• Flat Dimensions (width x length): 278x400mm / 27.8x40cm.
• Load Dimensions (width x length x height): 238x360x40mm / 23.8x36x4cm.
• Weight Per Mailer: 0.102 Kg.
• Pack Sizes: Pack of 10, 25, 50, 75, 100, 200, 300, 500, 1000 & 2000.
• PiP Size When Flat: Small Parcel.
• PiP Size When Expanded: Small Parcel.
• Board Grade: F micro-flute.
• For size guidance only this would replace the Kite Packaging code: CFM278400M.
• Mailcoms SKU: MCP-BOOK278-PC.

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Due to manufacturer tolerances, actual item dimensions may vary by 10–20mm. If precise sizing is important for your project, we strongly recommend requesting a sample before placing your order.