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Please Note: All postal tubes are supplied with endcaps
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5" (127mm) Diameter Triangular Postal Tubes


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Triangular Tubes Stock Sizes

We manufacture & hold stock of 16” 19” & 48.5” long triangular tubes meaning they are available from stock for same day delivery, next day delivery or on an economy two to three day economy service. Local customers in Coventry, Birmingham, Leicester or towns like Rugby, Leamington, Nuneaton or Warwick can collect in person on weekdays from our Coventry Distribution Centre if they wish. We can quickly make triangular tubes in different diameters if needed with other lengths also made to order. 

If you cannot see the exact size cardboard postal tube you require, feel free to give us a quick call and one of our friendly sales team will be happy to discuss your requirements. Remember that the usable length of the triangular tubes & boxes will be less than the overall length after inserting the plugs or end caps.

When these tubes are assembled they are of double walled thickness on two sides and single walled on the final side.


Environmental Information

We produce all of our cardboard poster tubes and cores in the United Kingdom. They are produced from recycled and recyclable materials. As a UK manufactured product our triangular & round postal tubes do not clock up environmentally damaging product miles as a result of being imported from overseas.

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Shipping Rates & Upgrades


FREE SHIPPING ON ORDERS OVER £30 (ex VAT)...
so no nasty surprises at checkout.

With the vast majority of items listed on this site being supplied without an additional charge for postage on orders over £30 NET .

The only time you may have additional charges is when you’re buying bulk quantities, very large items or you’re located offshore or in certain parts of the Scottish Highlands.

Please note that we cannot deliver to PO boxes.

Please check here for Offshore and Scottish Highlands shipping upgrades

If you require a faster delivery, click here for timed shipping upgrades

If you are ordering outside of the UK, please click here to see our international rates