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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
Kraft 1-Piece A6 Corrugated Postal Box Kraft 1-Piece A6 Corrugated Postal Box
Kraft 1-Piece A6 Corrugated Postal Box
#FMKRA6 178 x 131 x 55mm
From £0.41£0.34
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Kraft 1-Piece A5 Corrugated Postal Box Kraft 1-Piece A5 Corrugated Postal Box
Kraft 1-Piece A5 Corrugated Postal Box
#FMKRA5 244 x 180 x 55mm
From £0.59£0.49
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Black 1-Piece Tabbed Corrugated Postal Box Black 1-Piece Tabbed Corrugated Postal Box
Black 1-Piece Tabbed Corrugated Postal Box
#FMBL07 310 x 237 x 62mm
From £1.60£1.33
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Slim 1-Piece Flat Black Corrugated Postal Box Slim 1-Piece Flat Black Corrugated Postal Box
Slim 1-Piece Flat Black Corrugated Postal Box
#FMBL09 322 x 180 x 20mm
From £0.95£0.79
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Black 1-Piece A6 Corrugated Postal Box Black 1-Piece A6 Corrugated Postal Box
Black 1-Piece A6 Corrugated Postal Box
#FMBLA6 178 x 131 x 55mm
From £0.77£0.64
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Black 1-Piece A4 Corrugated Postal Box Black 1-Piece A4 Corrugated Postal Box
Black 1-Piece A4 Corrugated Postal Box
#FMBLA4 322 x 228 x 55mm
From £1.81£1.51
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Black 1-Piece A5 Corrugated Postal Box Black 1-Piece A5 Corrugated Postal Box
Black 1-Piece A5 Corrugated Postal Box
#FMBLA5 244 x 180 x 55mm
From £1.20£1.00
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White Corrugated Postal Box 154mm length White Corrugated Postal Box 154mm length
White Corrugated Postal Box 154mm length
#FMWH03 154 x 150 x 60mm
From £0.44£0.37
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Kraft 1-Piece A4 Corrugated Postal Box Kraft 1-Piece A4 Corrugated Postal Box
Kraft 1-Piece A4 Corrugated Postal Box
#FMKRA4 322 x 228 x 55mm
From £0.85£0.71
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Kraft 1-Piece Cube Postal Box
Kraft 1-Piece Cube Postal Box
#FMKRCU 127 x 127 x 127mm
From £0.26£0.22
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White Corrugated Postal Box 103mm length White Corrugated Postal Box 103mm length
White Corrugated Postal Box 103mm length
#FMWH01 103 x 85 x 60mm
From £0.38£0.32
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White Corrugated Postal Box 125mm length White Corrugated Postal Box 125mm length
White Corrugated Postal Box 125mm length
#FMWH02 125 x 103 x 80mm
From £0.44£0.37
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White Corrugated Postal Box 178mm length White Corrugated Postal Box 178mm length
White Corrugated Postal Box 178mm length
#FMWH08 178 x 144 x 56mm
From £0.49£0.41
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White Corrugated Postal Box 310mm length White Corrugated Postal Box 310mm length
White Corrugated Postal Box 310mm length
#FMWH07 310 x 237 x 62mm
From £0.55£0.46
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Kraft 1-Piece Thin A6 Corrugated Postal Gift Box Kraft 1-Piece Thin A6 Corrugated Postal Gift Box
Kraft 1-Piece Thin A6 Corrugated Postal Gift Box
#FMA6KR22 178 x 131 x 22mm
From £0.35£0.29
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Slim A5 Corrugated Flat Mailing Box Slim A5 Corrugated Flat Mailing Box
Slim A5 Corrugated Flat Mailing Box
#FMA5KR22 238 x 180 x 22mm
From £0.55£0.46
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Slim A4 Corrugated Flat Mailing Box Slim A4 Corrugated Flat Mailing Box
Slim A4 Corrugated Flat Mailing Box
#FMA4KR22 322 x 228 x 22mm
From £0.80£0.67
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White Flat Packed Micro Corrugated Mug Gift Box White Flat Packed Micro Corrugated Mug Gift Box
White Flat Packed Micro Corrugated Mug Gift Box
#FCWHMU 112 x 112 x 112mm
From £1.26 £1.05
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Kraft Flat Packed Micro Corrugated Mug Gift Box Kraft Flat Packed Micro Corrugated Mug Gift Box
Kraft Flat Packed Micro Corrugated Mug Gift Box
#FCKRMU 112 x 112 x 112mm
From £1.26 £1.05
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Kraft Perforated Wrap Small Mailing Box with Tear Strip Kraft Perforated Wrap Small Mailing Box with Tear Strip
Kraft Perforated Wrap Small Mailing Box with Tear Strip
#FMKR54 257 x 165 x 45mm
From £0.44£0.37
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Kraft Perforated Wrap Medium Mailing Box with Tear Strip Kraft Perforated Wrap Medium Mailing Box with Tear Strip
Kraft Perforated Wrap Medium Mailing Box with Tear Strip
#FMKR58 317 x 211 x 67mm
From £0.68£0.57
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Kraft Perforated Wrap Large Mailing Box with Tear Strip Kraft Perforated Wrap Large Mailing Box with Tear Strip
Kraft Perforated Wrap Large Mailing Box with Tear Strip
#FMKR64 347 x 255 x 47mm
From £0.83£0.69
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Black 1-Piece Matchbox Corrugated Postal Box Black 1-Piece Matchbox Corrugated Postal Box
Black 1-Piece Matchbox Corrugated Postal Box
#FMBL11 139 x 139 x 20mm
From £0.89£0.74
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Pack of 50 Single Wall White Packing Boxes
Pack of 50 Single Wall White Packing Boxes
#W2ASCV030306 76 x 76 x 152mm
£14.82 £12.35
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Pack of 25 Square Single Wall Kraft Packing Boxes 155mm Pack of 25 Square Single Wall Kraft Packing Boxes 155mm
Pack of 25 Square Single Wall Kraft Packing Boxes 155mm
#W2ASCV060606 155 x 155 x 155mm
£15.23 £12.69
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Pack of 50 Small White Corrugated Postal Boxes 95mm length Pack of 50 Small White Corrugated Postal Boxes 95mm length
Pack of 50 Small White Corrugated Postal Boxes 95mm length
#W2ASCDB1 95 x 75 x 38mm
£13.60 £11.33
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Pack of 50 Small White Corrugated Postal Boxes 120mm length Pack of 50 Small White Corrugated Postal Boxes 120mm length
Pack of 50 Small White Corrugated Postal Boxes 120mm length
#W2ASCDB2 120 x 120 x 52mm
£16.86 £14.05
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Pack of 50 Medium White Corrugated Postal Boxes 152mm length Pack of 50 Medium White Corrugated Postal Boxes 152mm length
Pack of 50 Medium White Corrugated Postal Boxes 152mm length
#W2ASCDB26 152 x 100 x 70mm
£17.68 £14.73
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Pack of 50 Medium White Corrugated Postal Boxes 232mm length Pack of 50 Medium White Corrugated Postal Boxes 232mm length
Pack of 50 Medium White Corrugated Postal Boxes 232mm length
#W2ASCDB34 232 x 158 x 95mm
£36.43 £30.36
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Pack of 50 Medium White Corrugated Postal Boxes 240mm length Pack of 50 Medium White Corrugated Postal Boxes 240mm length
Pack of 50 Medium White Corrugated Postal Boxes 240mm length
#W2ASCDB8 240 x 165 x 70mm
£25.84 £21.53
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Pack of 50 Medium White Corrugated Postal Boxes 305mm length Pack of 50 Medium White Corrugated Postal Boxes 305mm length
Pack of 50 Medium White Corrugated Postal Boxes 305mm length
#W2ASCDB45 305 x 213 x 50mm
£33.18 £27.65
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Pack of 50 Medium White Corrugated Postal Boxes 207mm length Pack of 50 Medium White Corrugated Postal Boxes 207mm length
Pack of 50 Medium White Corrugated Postal Boxes 207mm length
#W2ASCDB6 207 x 139 x 90mm
£29.10 £24.25
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Pack of 50 Medium White Corrugated Postal Boxes 220mm length Pack of 50 Medium White Corrugated Postal Boxes 220mm length
Pack of 50 Medium White Corrugated Postal Boxes 220mm length
#W2ASCDB7 220 x 148 x 60mm
£43.37 £36.14
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Pack of 10 E-Commerce Corrugated Kraft Boxes 205mm length Pack of 10 E-Commerce Corrugated Kraft Boxes 205mm length
Pack of 10 E-Commerce Corrugated Kraft Boxes 205mm length
#W2ASCEB1 205 x 150 x 100mm
£14.03 £11.69
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Pack of 10 E-Commerce Corrugated Kraft Boxes 450mm length Pack of 10 E-Commerce Corrugated Kraft Boxes 450mm length
Pack of 10 E-Commerce Corrugated Kraft Boxes 450mm length
#W2ASCEB3 450 x 300 x 150mm
£29.92 £24.93
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Earring Holder Kraft Mailer Earring Holder Kraft Mailer
Earring Holder Kraft Mailer
#EMKR65 65 x 65 x 12mm
From £0.25 £0.21
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Earring Holder White Mailer Earring Holder White Mailer
Earring Holder White Mailer
#EMWH65 65 x 65 x 12mm
From £0.25 £0.21
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Reversible Flower Letterbox Postal Mailing Box Reversible Flower Letterbox Postal Mailing Box
Reversible Flower Letterbox Postal Mailing Box
#FLKR33 590 x 175 x 34mm
£1.04 £0.87
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Lilac Deep 1-Piece A6 Mailing Gift Box Lilac Deep 1-Piece A6 Mailing Gift Box
Lilac Deep 1-Piece A6 Mailing Gift Box
#FMLIA6 178 x 131 x 55mm
From £1.22 £1.02
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Rose Quartz Deep 1-Piece A6 Mailing Gift Box Rose Quartz Deep 1-Piece A6 Mailing Gift Box
Rose Quartz Deep 1-Piece A6 Mailing Gift Box
#FMRQA6 178 x 131 x 55mm
From £1.22 £1.02
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Sage Green Deep 1-Piece A6 Mailing Gift Box Sage Green Deep 1-Piece A6 Mailing Gift Box
Sage Green Deep 1-Piece A6 Mailing Gift Box
#FMSGA6 178 x 131 x 55mm
From £1.22 £1.02
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Radiant Red Deep 1-Piece A6 Mailing Gift Box Radiant Red Deep 1-Piece A6 Mailing Gift Box
Radiant Red Deep 1-Piece A6 Mailing Gift Box
#FMRRA6 178 x 131 x 55mm
From £1.22 £1.02
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Lilac 1-Piece A6 Mailing Gift Box Lilac 1-Piece A6 Mailing Gift Box
Lilac 1-Piece A6 Mailing Gift Box
#FMA6LI22 178 x 131 x 22mm
From £0.36 £0.30
ex. VAT £0.78
£0.78
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Rose Quartz 1-Piece A6 Mailing Gift Box Rose Quartz 1-Piece A6 Mailing Gift Box
Rose Quartz 1-Piece A6 Mailing Gift Box
#FMA6RQ22 178 x 131 x 22mm
From £0.36 £0.30
ex. VAT £0.78
£0.78
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Showing 44 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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