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C6 / A6 Envelope Stiffeners / Layer Pads - 157mm x 122mm

  • C6 / A6 Envelope Stiffeners / Layer Pads - 157mm x 122mm
  • Product Code: STIFF-C6#
  • £0.00

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Available Options


C6 / A6 Envelope Stiffeners - 157mm x 122mm

Our A6 size envelope stiffeners are suitable for our C6 postcard envelopes & other C6 size envelopes – please check the size of your particular envelopes. They provide a flexible way to further protect the contents of your envelopes. You can choose to include them for the more delicate items you are posting or leave them out if they take your item into a higher postage band.

Choose our strong C6 / A6 Envelope Stiffeners / Layer Pads for Increased strength with your A6 mailings or select an envelope stiffener from our other sizes.


C6 / A6 Envelope Strengthener Specification:

Size: 157mm x 122mm C6 / A6 Envelope Stiffeners

Board Grade: 125T/125T B Flute

Weight: 7g appx

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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