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Our strongest, sturdiest corrugated boxes are designed for heavy goods and providing maximum protection. When shipping or transporting heavy goods, items prone to damage in the supply chain or goods with a high value, it is vital that strong, reliable and robust outer protection is used. We have a wide range of sizes suitable for engineering equipment, automotive parts, electronics equipment, machined parts, hydraulic components and much, much more. Given the high value of the goods shipped using this type of cardboard box our customers need peace of mind that our extra heavy duty cardboard boxes will more than deliver on the promise of providing the right protection.
Extra heavy duty cardboard boxes from Kite Packaging are manufactured to a high technical degree and have been added to our range following in-depth research and development. They have also been subjected to rigorous testing to ensure they are fit for the purpose of looking after your valuable or heavy items.
Popular with companies exporting goods aboard, our new heavy duty cartons are now a more popular choice for customers who previously favoured triple wall corrugated cartons as their method of packing. Made from heavy weight board and with strong fluting combinations, these extra heavy duty boxes are more cost effective than triple wall cartons.
For many customers purchasing these cartons it is vital to understand the specifics of their technical make up and performance. The product table above summarises the key technical specifications and by clicking on the ‘More info’ tab you can access even more in-depth and relevant facts. These include important metrics about how these boxes perform:-
On each related ‘More info’ table you will also find both the internal and external measurements of the boxes. The external dimensions for this type of box, with its typical applications, are vital for anyone using them to export out of the country. This is because the exact space the filled box will occupy is a key element for calculating the cost of export and is a key measurable for shipping companies.
If you need any further information on our Extra Heavy Duty Cardboard boxes, or any other items in our range our sales team are always happy to help.
Below is a diagram representing the flutes our extra heavy duty cartons are manufactured with. Please click on the ‘more info’ tab in the price table to see which flute applies to your chosen size.
Box dimensions refer to the internal (usable) dimensions and are always measured in the same order.
1. Longest opening dimension (length)
2. Shortest opening dimension (width)
3. Depth (height)
Depending on the board grade and flute, the internal and external dimensions of a box can differ significantly. Watch our ‘how to measure a box’ video to find out more.
Corrugated cartons differ in strength depending on the combination of fluting, and weight of paper used, to create a solid board. A single wall box has one layer of fluting, and a double wall box has two (giving extra strength, better suited to heavier items).
Many of our boxes have a ‘multi-score’ feature, giving you the option to vary the depth of the box to a pre-scored dimension. Simply cut the existing slots (between the flaps), fold along the pre-scored crease, and you create a shallower depth carton.
Compare our most popular types of boxes in the table below:
Use the grid below to see the range of sizes we offer in our cardboard boxes range, and the types of boxes that are available in each variant:
We sell various types of boxes, from standard duty single wall to extra heavy duty.
Single wall boxes are identified by the prefix ‘CSW’.
Heavy duty Enviro-boxes have a clear ‘Enviro’ print on one of the flaps.
Double wall boxes have a code starting ‘CDW’.
As you can see, our single wall boxes have a single layer of corrugated board. They are our best value option for packing lightweight goods.
Enviro-boxes are made from a thicker and more rigid single wall board. These are suitable for slightly heavier goods.
Double wall boxes have 2 layers of corrugated board, making them our strongest general-use boxes. They can be used to pack heavy items such as books.
We also sell extra heavy boxes, suitable for very heavy items such as engineering components.
Step 1: How big is your product?
Standard box dimensions are given in the order Length x Width x Height.
Measure the length with a tape measure. Next, measure the width. Measure the height / depth.
Step 2: Select a box that is slightly larger in all 3 dimensions. This will allow for extra padding to protect your product.
You will need the INTERNAL dimensions of the box.
Depending on the board grade, this could be up to 10mm less than the external dimensions.
To check that your box is the correct size, measure the length, width and height on the INSIDE of the box.
All dimensions provided for our boxes are internal.
Step 3: Wrap your product in a suitable padding material and place inside the box.
It should be a snug fit to prevent movement.
Step 4: Close the box and seal with tape or strapping as required.
Consider our custom logo printed tape for a cheap branded sealing option.
Rolls of adhesive labels printed with handling instructions or hazard warnings.
General purpose packaging tape for various applications. Choose from 66m or cost-effective 150m rolls, and acrylic, hotmelt and solvent adhesives.
Strong double wall stitched corrugated boxes, mounted on a timber pallet.
Want to check the true roll length or thickness of your pallet wrap?
Simply fill out the values and hit Calculate