{"product_id":"anti-opening-self-adhesive-packaging-confidential-envelope-in-blue-size-105-x-240-mm-made-from-80-gsm-envelope-cartridge-paper-offering-tamper-evident-protection-for-secure-document-mailing-and-internal-business-post","title":"Anti-opening self-adhesive packaging confidential envelope in blue, size 105 x 240 mm, made from 80 gsm envelope cartridge paper, offering tamper-evident protection for secure document mailing and internal business post.","description":"\u003ch1\u003eBlue Anti-Opening Confidential Envelope: Secure Self-Adhesive Mailer for A4 Documents\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/2401130309360329900.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis confidential envelope provides a straightforward solution for businesses and individuals needing to send sensitive documents securely. Its core function is the anti-opening feature, achieved through a self-adhesive flap that shows clear evidence of any tampering attempts. Designed to hold A4 papers folded into thirds, its 105 x 240 mm dimensions and professional blue colour make it suitable for formal correspondence, legal documents, or internal company post where discretion is required.\u003c\/p\u003e\n\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/2401130309370321400.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe envelope’s design centres on practical, tamper-evident security using simple, stated materials. It is not a complex security device but offers a visible deterrent against unauthorised opening for everyday mailing needs.\u003c\/p\u003e\n\u003ch3\u003eMaterial and Build\u003c\/h3\u003e\n\u003cp\u003eThe envelope is made from 80 gsm envelope cartridge paper. This weight of paper provides sufficient opacity and rigidity to protect the contents during handling and transit without adding excessive bulk or weight to postage costs. The construction relies on the self-adhesive strip along the flap to create the tamper-evident seal.\u003c\/p\u003e\n\u003ch3\u003eSize and Practical Fit\u003c\/h3\u003e\n\u003cp\u003eWith dimensions of 105 mm by 240 mm, this envelope is sized to accommodate standard A4 sheets of paper folded into three equal sections. This makes it compatible with common business documents, reports, and letters, ensuring contents fit neatly without the need for additional trimming or awkward folding.\u003c\/p\u003e\n\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/2401130309370328500.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis product serves specific scenarios where document integrity during transit is a priority. Its application is functional rather than decorative, focusing on security for physical mail.\u003c\/p\u003e\n\u003ch3\u003eEvent or Professional Use\u003c\/h3\u003e\n\u003cp\u003eIn professional environments, this envelope is suitable for sending contracts, financial information, personnel records, or any confidential internal memos. The tamper-evident feature provides a basic audit trail, showing if the envelope was opened before reaching the intended recipient, which can be important for compliance or legal matters.\u003c\/p\u003e\n\u003ch3\u003eEveryday Home Use\u003c\/h3\u003e\n\u003cp\u003eFor personal use, it can be employed for mailing important personal documents such as copies of identification, tax paperwork, or application forms where proof of non-interference is desired. The blue colour gives it a formal appearance appropriate for such correspondence.\u003c\/p\u003e\n\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/2401130309370329700.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe value of this envelope lies in its specific function and reusability for its intended purpose. It offers a dedicated tool for a common mailing need.\u003c\/p\u003e\n\u003ch3\u003eReuse and Low Maintenance\u003c\/h3\u003e\n\u003cp\u003eAs a single-use mailing product, its value is realised in the secure transit of each document sent. It requires no maintenance; the adhesive is ready to use and the envelope should be stored flat in a dry environment to preserve its condition before use.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose This Product\u003c\/h3\u003e\n\u003cp\u003eYou would choose this blue anti-opening envelope over a standard plain envelope when the contents require an extra layer of visible security. Its defined size ensures fit for A4 documents, and its self-adhesive tamper-evident design removes the need for moistening glue or additional sealing tapes, offering a clean, professional, and secure closure method.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/38940216-07c3-4299-bde7-4d1629a3a4b1.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/3faaa4d6-466b-4ac8-8448-4286ac209cec.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/629a37a5-88a9-4dde-aa3b-b03f0a1b32e1.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/d33f04ac-c984-4e80-b4b4-183a376edb96.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/da9930d6-b812-4773-a380-a28b3e72d407.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue tamper-evident confidential envelope with self-adhesive flap, dimensions 105mm by 240mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/624\/2025-09-28\/original-image\/de6f6640-7aa1-4a04-b0ca-3d168e9dbad9.webp\"\u003e\u003c\/div\u003e","brand":"9six9b-kc","offers":[{"title":"Blue \/ 105x240mm","offer_id":57932301336960,"sku":"CJYD194695401AZ","price":10.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/5979\/5328\/files\/d33f04ac-c984-4e80-b4b4-183a376edb96.webp?v=1776788838","url":"https:\/\/avelmere.com\/products\/anti-opening-self-adhesive-packaging-confidential-envelope-in-blue-size-105-x-240-mm-made-from-80-gsm-envelope-cartridge-paper-offering-tamper-evident-protection-for-secure-document-mailing-and-internal-business-post","provider":"Avelmere","version":"1.0","type":"link"}