Top 8 Box Size Cardboard Boxes A3 UK – Box Mailers

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1. Box

Crafts & Model Building 420 x 297mm A3 Size, Box BOXOMATIC 3mm Corrugated Cardboard Sheets 50 Pcs Different Sizes Single Wall for Packing Removal Storage Pads Divider Arts

Box - Custom size cardboard sheet, please contact us before placing an order. We also offer custom brand PRINT solution in one colour. Our boxes are made from b Flute Single Wall recyclable cardboard, it’s strong and durable. Limited offer: free delivery to uk mainland ONLY, if you place an order over £50 Common usage: moving, courier, Removals, office, Storage Dispatch, Warehouse Etc.
BrandBox
ManufacturerBoxomatic

2. party-decor

B Flute 2mm thick, A3 Size 420mm x 297mm, Brown on Both Sides, Corrugated Cardboard Sheets, Pack of 50

party-decor - Made from single wall B Flute 2mm thick cardboard. Perfect for adding sturdiness and rigidity to parcels for shipping. Great for at home and school arts and craft projects. A3 size 420mm x 297mm. Please check our shop for other shipping boxes and many other products.
Brandparty-decor
Manufacturerparty-decor
Height10 cm (3.94 Inches)
Length50 cm (19.69 Inches)
Weight0.5 kg (1.1 Pounds)
Width50 cm (19.69 Inches)

3. party-decor

Pack of 10, Corrugated Cardboard Sheets, Brown on Both Sides, B Flute 2mm thick, A3 Size 420mm x 297mm

party-decor - Perfect for adding sturdiness and rigidity to parcels for shipping. Great for at home and school arts and craft projects. Made from single wall B Flute 2mm thick cardboard. Please check our shop for other shipping boxes and many other products. A3 size 420mm x 297mm.
Brandparty-decor
Manufacturerparty-decor
Height10 cm (3.94 Inches)
Length50 cm (19.69 Inches)
Weight0.5 kg (1.1 Pounds)
Width50 cm (19.69 Inches)

4. AKAR

Double Wall 18x12x12"" Shipping Mailing Parcel Postal Brown Heavy Duty Cardboard Boxes, 5 x AKAR 457 x 305 x 305mm, A3 Medium Size

AKAR - They can be used in an office to archive items or sending products via a courier service. Size - 18x12x12" inches 457x305x305 mm. 100% recyclable. Double wall heavy Duty Parcel Postal Boxes. These cartons are delivered flat and are easy to assemble. Ideal for posting or packaging.
BrandAKAR
ManufacturerAKAR
Part NumberAKAR-DW-18x12x12-5

5. Box

Crafts & Model Building 25, A3 size 420 x 297mm, Box BOXOMATIC 3mm Double Wall Corrugated Cardboard Sheets 25 Pcs Different Sizes Double Wall for Packing Removal Storage Pads Divider Arts

Box - Limited offer: free delivery to uk mainland ONLY, if you place an order over £50 Common usage: moving, courier, office, Removals, Storage Dispatch, Warehouse Etc. We also offer custom brand PRINT solution in one colour. Our cardboard sheet are made from BC Flute Double Wall recyclable cardboard, it’s strong and durable. Custom size cardboard sheet, please contact us before placing an order.
BrandBox
ManufacturerBoxomatic

6. party-decor

Brown on Both Sides, Corrugated Cardboard Sheets, B Flute 2mm thick, A3 Size 420mm x 297mm, Pack of 5

party-decor - Perfect for adding sturdiness and rigidity to parcels for shipping. Please check our shop for other shipping boxes and many other products. Made from single wall B Flute 2mm thick cardboard. Great for at home and school arts and craft projects. A3 size 420mm x 297mm.
Brandparty-decor
Manufacturerparty-decor
Height10 cm (3.94 Inches)
Length50 cm (19.69 Inches)
Weight0.5 kg (1.1 Pounds)
Width50 cm (19.69 Inches)

7. Triplast

Triplast 457 x 305 x 254mm Medium Single Wall 18x12x10" Shipping Mailing Postal A3 Cardboard Boxes Pack of 25

Triplast - 18x12x10" 457x305x254mm. 25 flat packed Boxes. Triplast corrugated Single Wall Cardboard. Item package quantity: 1.
BrandTriplast
ManufacturerTriplast
Height25.4 cm (10 Inches)
Length30.5 cm (12.01 Inches)
Weight0.29 kg (0.64 Pounds)
Width45.7 cm (17.99 Inches)
Part NumberTPLBX25SINGL18X12X10
ModelTPLBX25SINGL18X12X10

8. GP Globe Packaging

10 x New 450x350x160mm Royal Mail Max Size Small Parcel Cardboard Postal Boxes

GP Globe Packaging - Measurments external : 450x350x160mm. Quantity : 10 Boxes. Colour : Brown. Measurements internal : 442x342x146mm. 10 x new 450x350x160mm royal mail Max Size Small Parcel Cardboard Postal Boxes.
BrandGP Globe Packaging
ManufacturerGP Globe Packaging