Click Here to Read About Collection from our depot in Coventry

Same Day Delivery May Be Available

Click Here For more details
PayPal Logo

C5 / A5 PiP Gummed Paper Envelopes With Stiffeners - 162mm x 238mm (6.3" x 9.3")

  • C5 / A5 PiP Gummed Paper Envelopes With Stiffeners - 162mm x 238mm  (6.3" x 9.3")
  • Product Code: C5ENV-STIF#
  • £0.00

Includes FREE SHIPPING To Most UK Mainland Addresses
Orders placed after 3.00 pm may not be shipped on the same day

Available Options

Quality C5 A5 Gummed Paper Envelope & Stiffener Combination


This strong combination weighs just 17.7g – allowing many customers to make huge postal saving by helping them keep their total item weight below 100g & within Royal Mail's Standard Letter weight limits & not pushing up to a Large Letter.

Our super quality white C5 / A5 paper envelopes combined with a quality stiffener will provide the ultimate protection for your A5 mailings.

Flexibility & protection are at the core of this extremely useful coupling. Simply use the envelope as it is for A5 size items or combine it with our rigid C5 / A5 stiffener to create an envelope that will outperform board backed envelopes and safeguard those important documents that must not be bent in the post.

Simply & very quickly inserted, these fluted stiffeners will instantly transform a C5 A5 paper envelope into a robust, highly effective board backed envelope alternative & provide greater rigidity than any board backed or hard backed envelope on the market.

Why not provide the ultimate protection for your mailings and invest in this versatile & strong mailing option.



Excellent quality 90gsm paper envelope

C5 / A5 Size E-Flute corrugated envelope stiffener

Qualifies as a "Small / Standard Letter" under Royal Mail's pricing in proportion restrictions

Dimensions: 162mm x 238mm - 6.3" x 9.3"

Envelope & stiffener combined weight - 17.7g (appx)

Stiffener Weight - 10g (appx)

Envelope Weight - 7.7g (appx)

Shipping Rates & Upgrades

so no nasty surprises at checkout.

With the vast majority of items listed on this site being supplied without an additional charge for postage — you can shop with confidence that the price you see will be the price you pay at checkout.

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.

All of our prices are shown Inclusive of VAT and Free Shipping to MOST UK Mainland addresses. 

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