• 0800 542 44 28 Mon-Thurs 8:00am-6pm,
    Fri 8:00am-5:30pm
  • Buying in bulk? FREE no obligation quotes
  • 8,8/10
    Trust Pilot rating
  • Next day delivery FREE delivery for orders over £200*
logo raja 0800 542 44 28
£0.00 0 products
Order by reference

Brown cardboard envelopes with locking flaps

(7 references)
From  £20.26  ex. VAT
See prices
Next day delivery
  • 350 gsm micro-flute corrugated board
  • Keeps items free from creasing during posting
  • Reinforced corners also provide extra protection
  • Expandable edges increase height up to 40 mm
  • Sold in packs
Read more …
Eco-responsible product



Price ex. VAT per pack Up to
20% Off
1 +3 +5 +10 +
RCA25C 20025046large letter / small parcel10020.2620.2620.2620.26
RCA05C 25036078small parcel10058.7046.9546.9546.95
RCA09C 520670278large parcel50100.7080.5580.5580.55
RCA04C 23033067large letter / small parcel10053.4548.1045.4042.75
RCA06C 320440119small parcel10083.5575.1970.9966.80
RCA07C 430530185medium parcel100134.29120.85114.10107.40
RCA59C 450590216medium parcel5078.3070.4766.5562.60
Products we can recommend to you...
Maxi, brown, panel wrap cardboard mailers
Maxi, brown, panel wrap cardboard mailers
4 references
From £39.50 ex. VAT
Gusseted Manilla  envelopes
Gusseted Manilla envelopes
1 reference
From £34.90 ex. VAT
Kraft Paper Mailing Bags
Kraft Paper Mailing Bags
4 references
From £39.19 ex. VAT
Self-seal Manilla envelopes
Self-seal Manilla envelopes
7 references
From £5.46 ex. VAT
Detailed description

Expandable and tamper evident for secure mailing

These brown, carton envelopes feature tamper evident locking flaps, which once inserted cannot be opened without causing considerable damage to the cardboard envelope. For extra security, double seal the envelopes with one of our packaging tapes. Each mailer is manufactured from 350 gsm micro-flute corrugated board which helps maintain the structure and rigidity of the envelope.

This board keeps your products flat and free from creasing during posting and will protect from day to day wear and tear. Reinforced corners also provide extra protection for your products.

The expandable edges allow the cardboard envelope to increase in height by up to 40 mm, meaning that you can use these cardboard envelopes to post a variety of different products including, DVDs, CDs, books, catalogues and calendars.

If you want to discuss your packaging requirements with one of our experts call 0800 542 44 28 today, and get next day delivery.

Sold in packs.

Quantity Available in packs of 50 or 100 depending on the size of the envelope. Please see our discounts for 3 or more packs if you want to order in bulk.

Size and shape options These carton envelopes with locking flaps start at 200x250mm and go up to 450x700mm (internal opening x height).

Materials RAJA’s carton envelopes are made from 350gsm micro-flute corrugated board.

Environmental information 100% recyclable.

Delivery information Delivered in packs of 50 or 100.

How to choose the correct size brown cardboard envelope for your product:When the cardboard envelope is expanded, please note that envelope decreases in opening and length measurements.To use at minimum capacity: Subtract 20 mm from the opening and 10 mm from the length.To use at maximum capacity: Subtract 60 mm from the opening and 30 mm from the length.
Customers who bought this product were also interested in
Customer reviews
Most recent customer reviews
great product
By jonathan on 27/07/19 09:06 - Verified Purchase by TrustPilot
Reference : RCA04C
Great stuff! Does the job!
By Bence on 19/06/19 10:19 - Verified Purchase by TrustPilot
Reference : RCA09C