Triplast 250 x C5 Manilla Self Seal Security Envelopes (Size: 229x164mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial UseCONTENTS: Pack of 250 Manilla Brown Plain Mailing Envelopes SIZE: C5 LENGTH: 229 mm 9. 02 in WIDTH: 164 mm 6. 46 in THICKNESS: 90 gsm MADE in the UK ENHANCED SECURITY: These envelopes are made from high quality brown paper that is fully opaque to ensure the contents remain concealed when in transit or storage. Send confidential documents with total confidence & peace of mind! HASSLE FREE & PRACTICAL: The self seal adhesive eliminates the need for any