We use cookies to improve your browsing experience. Read our Cookie Policy here. Continue
Free delivery on all UK orders over £150. Terms apply, click here for more information.
My dimensions are in:
mmcminchesmetres
I'm looking for:
BoxesBagsPostal
My sizes are:
Minimum Size (My product is this big)Approx Size (Slightly smaller is ok)
Find Products
You are at the 5+ Rate. Add 4 items to boost your savings.
Order in the next for same day despatch.
Manilla Large Letter Cardboard Envelopes are one of the most common types of envelopes; the perfect choice for sending a range of important documents that need to be kept flat during transit. Our range of manilla large letter envelopes includes 3 sizes of Please Do Not Bend envelopes; made from a high-quality rigid backing board, have a paper front to give your items a good level of protection whilst not adding to your postal charges, and are sized to comply with Royal Mail sizing. Whichever size you go for, we’re confident it’ll be perfect for your needs, and an excellent eco-friendly solution – fully recyclable, biodegradable, and completely plastic free.
Please note: Large letter sizing is up to 240 x 165 x 5mm with a 100g weight limit.
