







📬 Send it safe, send it smart — the envelope that means business.
Triplast’s 50-pack of A5 C5 manilla hard board back envelopes combines robust 1000 micron rigidity with a 120gsm kraft front, ensuring your documents arrive crease-free and professional. Featuring a peel & seal strip for fast, secure closure, these eco-conscious envelopes are made from 100% recycled materials and designed to reduce postage costs while eliminating the need for extra labels. Perfect for mailing, storing, and protecting important papers with style and sustainability.








| ASIN | B01H01U9PW |
| Best Sellers Rank | 692 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 8 in Packing List Envelopes |
| Brand | Triplast |
| Closure | Self-Seal |
| Colour | Brown |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,530) |
| Date First Available | 13 Jun. 2016 |
| Item Weight | 27.2 g |
| Manufacturer | Triplast |
| Manufacturer Part Number | A5 C5 |
| Material Type | Paper |
| Model Number | A5 C5 |
| Number of Items | 50 |
| Paper Finish | Uncoated |
| Product Dimensions | 16.2 x 22.9 x 0.2 cm; 27.22 g |
| Shape | Rectangular |
| Sheet Size | A5 |
| Size | A5 C5 (229 x 162mm) |
Z**Z
Consistently good
I bought 125 C5 Manila envelopes as I’ve previously purchased C3 and C4 from this seller and these are equally good. Delivery is quick, in good packaging. The sturdiness of the card backing make them great for sending prints and look professional. Seal and adhesive is good, hasn’t failed me yet. Does a great job.
L**N
Great board backed envelopes
Just great
S**M
Good value
Strong, sturdy and good value and good quality.
R**R
Not bad
Not bad just can't get some items in them but ok for small books.
S**E
True letter size and weigh between 23/24g each.
I purchased these at £4.95 per 100 so for me they were excellent value. The following day however, the price increased to £17.59 per 100. Perhaps it was a mistake in the listing. Either way I guess I got lucky. They are true letter size (just shy or the maximum permitted width) so no problem there and overall, they are of good quality, but at £17.59 (18p each) I would not have purchased them. They measure 228 x 160 mm and 1.5mm thick approx. They weigh between 23 and 24 grams each and are pretty sturdy. At 5p each (the price I paid) they have to be 5 star value. Pity I only bought 200 of them.
A**E
Great purchase
Really pleased with this purchase. I use them to post cake toppers and they definitely do the job and intended function of keeping them flat and straight. I’ve ordered these a few times and they always come in perfect condition, no bends or anything! The peel seal also works as intended.
S**S
Just the job
Seems fine only used one so far but looks as described
A**R
Good size
Compatible with Royal mail. Good value for money. Nice quality.
A**R
Perfect for lightweight but protective packaging for prints and stickers.
K**N
I decided to order these because I've received mail from the UK in these types of envelopes and thought they would be good to use for sending sticker sheets or small art prints via First class mail. I like them because it has a thin cardboard in the back so it can help prevent the contents inside from severely bending during delivery. It's not that rigid though and is flexible, but does provide some support. One thing that I dislike is that the brown paper is quite thin. It would be a better product if the paper was a thicker Kraft paper. I feel that the paper can rip if it's handled roughly. If you're sending pictures or prints I would suggest putting them in between cardstock if you're worried of getting any dents or scratches since the brown paper is thin. Or just purchase a more rigid mailer. I also disliked that they were delivered in a plastic bag. I'd prefer if they were at least packaged in a box to prevent any bent corners. Mine came in a bent at the end and at the corners. I was hoping they would come in perfect condition. However, the envelopes were still in tact and none of them were ripped.
K**R
Good quality
L**A
Por supuesto, el mejor precio que he encontrado en la web. Vinieron en 3 cajas, imagino que será debido al peso, pero por lo demás todo perfecto. Son duros y de gran calidad.
K**I
Tal cual lo descrito:) llegó muy rápido y en perfecto estado :D ¡Muchísimas gracias!
Trustpilot
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