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Kraft Brown Flat Packed Postal Boxes

Our flat-pack postal boxes are available in various sizes and styles, including classic boxes, pizza-style boxes, and book wrap mailers, perfect for all your shipping needs.
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57 products
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57 products
Branded Item
Sage Green 1-Piece A6 Mailing Gift Box Sage Green 1-Piece A6 Mailing Gift Box
Sage Green 1-Piece A6 Mailing Gift Box
#FMA6SG22 178 x 131 x 22mm
From £0.36 £0.30 £0.65
£0.36
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SaleBranded Item
Radiant Red 1-Piece A6 Mailing Gift Box Radiant Red 1-Piece A6 Mailing Gift Box
Radiant Red 1-Piece A6 Mailing Gift Box
#FMA6RR22 178 x 131 x 22mm
From £0.36 £0.30 £0.65
£0.36
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Branded Item
Apricot Crush Orange Deep 1-Piece A6 Mailing Gift Box Apricot Crush Orange Deep 1-Piece A6 Mailing Gift Box
Apricot Crush Orange Deep 1-Piece A6 Mailing Gift Box
#FMACA6 178 x 131 x 55mm
From £1.22 £1.02
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Branded Item
White Corrugated Postal Box White Internal White Corrugated Postal Box White Internal
White Corrugated Postal Box White Internal
#FMWW07 310 x 237 x 62mm
From £0.86£1.03
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Branded Item
White Corrugated Postal Box White Internal 154mm length White Corrugated Postal Box White Internal 154mm length
White Corrugated Postal Box White Internal 154mm length
#FMWW03 154 x 150 x 60mm
From £0.55£0.66
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Branded Item
Kraft Brown Double Walled Postal Box for A4 Magnetic Box Kraft Brown Double Walled Postal Box for A4 Magnetic Box
Kraft Brown Double Walled Postal Box for A4 Magnetic Box
#FMKR31EB 330 x 235 x 75mm
From £0.89£1.07
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Branded Item
Kraft Brown Double Walled Postal Box for Square Magnetic Box Kraft Brown Double Walled Postal Box for Square Magnetic Box
Kraft Brown Double Walled Postal Box for Square Magnetic Box
#FMKR23EB 250 x 245 x 110mm
From £1.04£1.25
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Branded Item
Kraft Brown Double Walled Postal Box for Mailing Deep Magnetic Box Kraft Brown Double Walled Postal Box for Mailing Deep Magnetic Box
Kraft Brown Double Walled Postal Box for Mailing Deep Magnetic Box
#FMKR22EB 300 x 235 x 122mm
From £1.11£1.33
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Branded Item
Kraft Brown Double Walled Postal Box for Mailing Large Magnetic Box Kraft Brown Double Walled Postal Box for Mailing Large Magnetic Box
Kraft Brown Double Walled Postal Box for Mailing Large Magnetic Box
#FMKR40EB 420 x 315 x 116mm
From £1.51£1.81
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Branded Item
Kraft Bottle Postal Box for Mailing Kraft Bottle Postal Box for Mailing
Kraft Bottle Postal Box for Mailing
#FMKR33RF 345 x 105 x 105mm
From £0.49£0.59
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Branded Item
Kraft Brown Postal Box for Mailing Small Magnetic Box
Kraft Brown Postal Box for Mailing Small Magnetic Box
#FMKR12RF 160 x 135 x 78mm
From £0.44£0.53
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Rollor™ Medium Kraft Protective Bottle Mailer Rollor™ Medium Kraft Protective Bottle Mailer
Rollor™ Medium Kraft Protective Bottle Mailer
#BWRPKRME 433 x 147 x 135mm
£5.54 £4.62
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Branded Item
Kraft Brown Postal Box for Mailing Medium Magnetic Box
Kraft Brown Postal Box for Mailing Medium Magnetic Box
#FMKR16RF 218 x 175 x 90mm
From £0.64£0.77
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Showing 57 of 57 products

What’s a flat-pack box?

A flat-pack box is packaging that arrives flat and easily folds into shape. Unlike rigid boxes, flat-pack boxes save storage space and shipping costs by being compact until needed. 

Discover our range of rigid two-piece postal boxes here, also ideal for premium gift packaging.

Key benefits:

Space-saving: Store flat and assemble only when needed, ideal for businesses managing limited storage space. 

Easy assembly: Quick-fold designs with self-locking tabs - no tape or glue required.

Durable protection: Strong corrugated cardboard ensures safe shipping for delicate items. 

Customisable: Easily branded with logos or custom designs, enhancing your customer's unboxing experience.

Common uses:

E-commerce shipping: Secure, professional packaging for online retailers.

Gifts & subscriptions: Durable and stylish for a memorable unboxing experience. 

Storage & organisation: Convenient for storing documents, books, and supplies at home or in the office.

Explore our complete selection of postal boxes here!

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