Triplast 50 x C4 Manilla Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use by Amazon.co.uk

Price last update: 12/06/2025

Description

Triplast Manilla Self Seal Security Envelopes
are the perfect mailing supply to save you time and effort. They are designed to stay sealed with no tape, glue or any kind of moisture. Just close the flap and press shut! The brown opaque paper will ensure the contents remain safe and secure without revealing sensitive details. Manufactured to a 90 gsm thickness for an ideal blend of lightness and durability, these envelopes are perfect to be used on a daily basis at home, at work, or in commercial settings. Sustainably produced, the paper used to make them is sourced from forests that have been well-managed, controlled, audited, and certified, and do not contribute to deforestation.
There are a wide variety of sizes and quantities to choose from. The sizes available are: C4
(324x229mm), C5
(229x164mm) & DL
(110x220 mm). We also stock them in 2 other types: Window Self Seal Security Envelopes
& White Self Seal Security Envelopes
.
Self Seal Closure
Just fold & press the flap to secure shut - these envelopes are designed to stay sealed with no tape or glue!
Enhanced Security
The high-quality brown opaque paper ensures contents remain hidden from prying eyes
Printer Friendly
These envelopes are compatible with most inkjet and laser printers for quick addressing
Multipurpose
A cost-effective option for everyday use at home, in the workplace, or in commercial settings
Size
C4 (324x229mm)
C5 (229x164mm)
DL (110x220mm)
Available in Multiple Sizes (C4, C5, DL & C6)
Available in Multiple Sizes (C4, C5, DL & C6)
Color
Manilla Brown
Manilla Brown
Manilla Brown
White
White
Type
Plain (No Window)
Plain (No Window)
Plain (No Window)
With Window
Plain (No Window)
Style
Pocket (Opening along short edge)
Pocket (Opening along short edge)
Wallet (Opening along long edge)
Pocket & Wallet Options Available
Pocket & Wallet Options Available
Recyclable & PEFC Certified
About Triplast
We are a UK based manufacturer, distributor and supplier of packaging products & office supplies including cardboard boxes, bubble wrap, kraft wrapping paper, corrugated cardboard paper, plastic mailing bags, bubble padded envelopes, cardboard & paper envelopes and other e-commerce, retail & industrial packaging products.
Our years of experience and well established presence in the flexible packaging industry coupled with our state-of-the-art automated machinery means you can be rest assured when buying our products.
We have great confidence in our products but if for any reason you are unhappy with your purchase, please send us a message and we promise to revert to you with a swift resolution.

Product information

    • Brand:Triplast
    • Colour:Brown
    • Closure type:Self-Seal
    • Material:Paper
    • Number of items:50
    • Manufacturer:Triplast
    • Model Number:ENMC450
    • Package Dimensions:36.8 x 30.4 x 4 cm; 680 Grams
    • Closure:Self-Seal
    • Shape:Rectangular
    • Material Type:Paper
    • Number of Items:50
    • Size:C4 (324x229mm)
    • Sheet Size:A4
    • Manufacturer Part Number:ENMC450
    • Item Weight:680 g

    Related products to Triplast 50 x C4 Manilla Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use:

    Triplast 50 x C4 Manilla Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use
    Triplast 50 x C4 Manilla Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use by Amazon.co.uk
    Price last update: 12/06/2025