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Brand OnlineNo InsertBestseller Kraft 1-Piece A6 Corrugated Postal BoxFMKRA6 178 x 131 x 55mmFrom £0.41£0.34£0.62 £0.52
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Brand OnlineNo InsertBestseller Kraft 1-Piece A5 Corrugated Postal BoxFMKRA5 244 x 180 x 55mmFrom £0.59£0.49£0.95 £0.79
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Get 20% off FMBL09 (Use code: TOPPICKS20) Slim 1-Piece Flat Black Corrugated Postal BoxFMBL09 322 x 180 x 20mmFrom £0.95£0.79£1.18 £0.98
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Brand Online Black 1-Piece A6 Corrugated Postal BoxFMBLA6 178 x 131 x 55mmFrom £0.77£0.64£0.94 £0.78
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Brand Online Black 1-Piece A4 Corrugated Postal BoxFMBLA4 322 x 228 x 55mmFrom £1.81£1.51£2.09 £1.74
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Brand Online Black 1-Piece A5 Corrugated Postal BoxFMBLA5 244 x 180 x 55mmFrom £1.20£1.00£1.37 £1.14
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Brand OnlineNo Insert White Corrugated Postal Box 154mm lengthFMWH03 154 x 150 x 60mmFrom £0.44£0.37£0.71 £0.59
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Brand OnlineNo Insert Kraft 1-Piece A4 Corrugated Postal BoxFMKRA4 322 x 228 x 55mmFrom £0.85£0.71£1.34 £1.12
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Brand OnlineNo Insert Kraft Brown Postal Box for Mailing Medium Magnetic BoxFMKR16 218 x 175 x 90mmFrom £0.73£0.61£0.85 £0.71
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Brand OnlineNo Insert Kraft 1-Piece Cube Postal BoxFMKRCU 127 x 127 x 127mmFrom £0.26£0.22£0.42 £0.35
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Brand OnlineNo Insert White Corrugated Postal Box 103mm lengthFMWH01 103 x 85 x 60mmFrom £0.38£0.32£0.56 £0.47
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Brand OnlineNo Insert White Corrugated Postal Box 125mm lengthFMWH02 125 x 103 x 80mmFrom £0.44£0.37£0.72 £0.60
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Brand OnlineNo Insert White Corrugated Postal Box 178mm lengthFMWH08 178 x 144 x 56mmFrom £0.49£0.41£0.77 £0.64
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Brand OnlineNo Insert White Corrugated Postal Box 310mm lengthFMWH07 310 x 237 x 62mmFrom £0.55£0.46£0.85 £0.71
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Brand OnlineNo Insert Kraft 1-Piece Thin A6 Corrugated Postal Gift BoxFMA6KR22 178 x 131 x 22mmFrom £0.35£0.29£0.55 £0.46
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Brand Online Slim A5 Corrugated Flat Mailing BoxFMA5KR22 238 x 180 x 22mmFrom £0.55£0.46£0.89 £0.74
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Brand Online Slim A4 Corrugated Flat Mailing BoxFMA4KR22 322 x 228 x 22mmFrom £0.80£0.67£1.21 £1.01
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Kraft Perforated Wrap Small Mailing Box with Tear StripFMKR54 257 x 165 x 45mmFrom £0.44£0.37£0.73 £0.61
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Kraft Perforated Wrap Medium Mailing Box with Tear StripFMKR58 317 x 211 x 67mmFrom £0.68£0.57£0.85 £0.71
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Kraft Perforated Wrap Large Mailing Box with Tear StripFMKR64 347 x 255 x 47mmFrom £0.83£0.69£0.98 £0.82
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Pack of 25 Square Single Wall Kraft Packing Boxes 155mmW2ASCV060606 155 x 155 x 155mm£15.23 £12.69
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No Insert Pack of 50 Small White Corrugated Postal Boxes 95mm lengthW2ASCDB1 95 x 75 x 38mm£13.60 £11.33
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No Insert Pack of 50 Small White Corrugated Postal Boxes 120mm lengthW2ASCDB2 120 x 120 x 52mm£16.86 £14.05
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No Insert Pack of 50 Medium White Corrugated Postal Boxes 152mm lengthW2ASCDB26 152 x 100 x 70mm£17.68 £14.73
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No Insert Pack of 50 Medium White Corrugated Postal Boxes 232mm lengthW2ASCDB34 232 x 158 x 95mm£36.43 £30.36
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No Insert Pack of 50 Medium White Corrugated Postal Boxes 240mm lengthW2ASCDB8 240 x 165 x 70mm£25.84 £21.53
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No Insert Pack of 50 Medium White Corrugated Postal Boxes 305mm lengthW2ASCDB45 305 x 213 x 50mm£33.18 £27.65
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No Insert Pack of 50 Medium White Corrugated Postal Boxes 207mm lengthW2ASCDB6 207 x 139 x 90mm£29.10 £24.25
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No Insert Pack of 50 Medium White Corrugated Postal Boxes 220mm lengthW2ASCDB7 220 x 148 x 60mm£43.37 £36.14
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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.
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!