{"id":3358,"date":"2024-08-01T14:57:49","date_gmt":"2024-08-01T12:57:49","guid":{"rendered":"https:\/\/multisecu.fr\/?p=3358"},"modified":"2026-10-10T14:20:38","modified_gmt":"2026-10-10T12:20:38","slug":"comment-choisir-une-serrure-de-boite-aux-lettres","status":"publish","type":"post","link":"https:\/\/www.multisecu.fr\/en\/conseils\/comment-choisir-une-serrure-de-boite-aux-lettres\/","title":{"rendered":"How to Choose a Letterbox Lock"},"content":{"rendered":"<article class=\"wp-block-group ms-conseils ms-conseils-article is-layout-flow wp-block-group-is-layout-flow\">\n<section class=\"wp-block-group msc-section msc-hero is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-wrap is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-breadcrumb wp-block-paragraph\"><a href=\"\/en\/\">Home<\/a><span>\/<\/span><a href=\"\/en\/category\/conseils\/\">Locksmith advice<\/a><\/p>\n\n\n<div class=\"wp-block-group msc-hero-grid is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-hero-copy is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">Selecting your equipment<\/p>\n\n\n<h1 class=\"wp-block-heading\">How to Choose a Letterbox Lock<\/h1>\n\n\n<p class=\"msc-lead wp-block-paragraph\">A letterbox lock must fit the door, the cam, and the mail distribution system. External similarity between two small barrels is not sufficient to guarantee compatibility.<\/p>\n\n\n<p class=\"msc-meta wp-block-paragraph\">PRACTICAL GUIDE <span>\u00b7<\/span> 2-MINUTE READ<\/p>\n\n<\/div>\n\n\n<figure class=\"wp-block-image size-full msc-photo msc-hero-photo\"><img decoding=\"async\" width=\"1920\" height=\"1920\" src=\"https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled.jpg\" alt=\"Letterbox sets\" class=\"wp-image-3423\" srcset=\"https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled.jpg 1920w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled-300x300.jpg 300w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled-1024x1024.jpg 1024w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled-150x150.jpg 150w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled-768x768.jpg 768w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled-1536x1536.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n<\/div>\n\n<\/div>\n\n<\/section>\n\n\n<section class=\"wp-block-group msc-section msc-story is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-wrap is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-reading is-layout-flow wp-block-group-is-layout-flow\">\n<nav class=\"wp-block-group msc-toc is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">IN THIS GUIDE<\/p>\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#chapitre-1\">Identify the existing installation<\/a><\/p>\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#chapitre-2\">Check compatibility with postal delivery access<\/a><\/p>\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#chapitre-3\">Consider exposure to the weather and the condition of the letterbox<\/a><\/p>\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#chapitre-4\">Replace the lock and test it with the door open<\/a><\/p>\n\n\n<p class=\"msc-toc-back wp-block-paragraph\"><a href=\"\/en\/category\/conseils\/\">\u2190 All advice<\/a><\/p>\n\n<\/nav>\n\n\n<div class=\"wp-block-group msc-prose is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-takeaway is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">KEY POINTS<\/p>\n\n\n<p class=\"wp-block-paragraph\">Measure the existing installation and verify postal usage before ordering. A solid barrel does not compensate for a damaged door or mounting.<\/p>\n\n<\/div>\n\n\n<section id=\"chapitre-1\" class=\"wp-block-group msc-chapter is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Identify the existing installation<\/h2>\n\n\n<p class=\"wp-block-paragraph\">On many letterboxes, the key triggers a cam at the back of the barrel. This component secures the door. Its length, shape, and position must match the mounting point.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Note the box brand, door thickness, mounting dimensions, and barrel body length. A photo of the interior, when the box is open, is useful to complete these measurements.<\/p>\n\n<\/section>\n\n\n<section id=\"chapitre-2\" class=\"wp-block-group msc-chapter is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Check compatibility with postal delivery access<\/h2>\n\n\n<p class=\"wp-block-paragraph\">In a communal building, fittings may depend on the postal access system and the building's overall organisation. Replacement must preserve the functionality required for letter distribution.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Before modifying a shared facade or a collective closure, contact the relevant building manager. Not all small locks sold for furniture or boxes are suitable for a letterbox.<\/p>\n\n<\/section>\n\n\n<section id=\"chapitre-3\" class=\"wp-block-group msc-chapter is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Consider exposure to the weather and the condition of the letterbox<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Externally, materials, anti-corrosion treatment, and the protection of the key entry point are critical. Infiltration or a warped door may interfere with closure, even with a new cylinder.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Inspect the cam, screw, or retaining clip and the mounting area. After degradation, it may be necessary to restore the door's condition rather than simply replacing the lock.<\/p>\n\n<\/section>\n\n\n<section id=\"chapitre-4\" class=\"wp-block-group msc-chapter is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Replace the lock and test it with the door open<\/h2>\n\n\n<p class=\"wp-block-paragraph\">If the box is open and the mounting is confirmed, replacement can be straightforward. Keep all parts in order, avoid deforming the metal through excessive tightening, and check the cam rotation before closing.<\/p>\n\n\n<p class=\"wp-block-paragraph\">In the case of a lost key with a closed box, do not attempt a makeshift drilling that could damage the door panel. A proper diagnosis will determine the appropriate opening method, followed by installing a compatible lock with a new key set.<\/p>\n\n<\/section>\n\n\n<div class=\"wp-block-group msc-details is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">KEY VISUALS<\/p>\n\n\n<div class=\"wp-block-group msc-detail-gallery is-layout-flow wp-block-group-is-layout-flow\">\n<figure class=\"wp-block-image size-full msc-photo msc-detail-photo msc-contain\"><img decoding=\"async\" width=\"1920\" height=\"1282\" src=\"https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/a-modern-videophone-with-a-letterbox-and-a-wireless-card-reader-mounted-in-panel-fence-in-anthracit.jpg\" alt=\"A modern videophone with a letterbox and a wireless card reader, mounted in panel fence in anthracite\" class=\"wp-image-3421\" srcset=\"https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/a-modern-videophone-with-a-letterbox-and-a-wireless-card-reader-mounted-in-panel-fence-in-anthracit.jpg 1920w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/a-modern-videophone-with-a-letterbox-and-a-wireless-card-reader-mounted-in-panel-fence-in-anthracit-300x200.jpg 300w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/a-modern-videophone-with-a-letterbox-and-a-wireless-card-reader-mounted-in-panel-fence-in-anthracit-1024x684.jpg 1024w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/a-modern-videophone-with-a-letterbox-and-a-wireless-card-reader-mounted-in-panel-fence-in-anthracit-768x513.jpg 768w, https:\/\/www.multisecu.fr\/wp-content\/uploads\/2024\/08\/a-modern-videophone-with-a-letterbox-and-a-wireless-card-reader-mounted-in-panel-fence-in-anthracit-1536x1026.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n<\/div>\n\n<\/div>\n\n<\/div>\n\n<\/div>\n\n<\/div>\n\n<\/section>\n\n\n<section class=\"wp-block-group msc-section msc-related is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-wrap is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">RELATED READING<\/p>\n\n\n<h2 class=\"wp-block-heading\">Related advice.<\/h2>\n\n\n<div class=\"wp-block-group msc-related-grid is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">Cylinders &amp; keys<\/p>\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.multisecu.fr\/en\/conseils\/choisir-son-cylindre-de-serrure\/\">Choosing the Right Lock Cylinder <span aria-hidden=\"true\">\u2197<\/span><\/a><\/h3>\n\n\n<p class=\"wp-block-paragraph\">The right cylinder is one that matches your lock, your dimensions, and your usage. Before comparing brands, gather the information that ensures a reliable choice.<\/p>\n\n<\/div>\n\n\n<div class=\"wp-block-group msc-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">Emergency locksmith<\/p>\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.multisecu.fr\/en\/conseils\/problemes-de-serrure-les-plus-courants-a-annecy\/\">The 5 most common lock problems <span aria-hidden=\"true\">\u2197<\/span><\/a><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Stiff key, loose handle, or door that no longer closes: symptoms help identify the fault. Here are five frequent scenarios and useful checks to avoid worsening the issue.<\/p>\n\n<\/div>\n\n\n<div class=\"wp-block-group msc-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">Emergency locksmith<\/p>\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.multisecu.fr\/en\/conseils\/comment-ouvrir-une-serrure-tubulaire\/\">Jammed tubular lock or missing key: what are your options? <span aria-hidden=\"true\">\u2197<\/span><\/a><\/h3>\n\n\n<p class=\"wp-block-paragraph\">A tubular lock is usually recognisable by its circular keyway and hollow-ended key. It is used on various types of equipment, with mechanisms and security levels that vary by model.<\/p>\n\n<\/div>\n\n<\/div>\n\n<\/div>\n\n<\/section>\n\n\n<section class=\"wp-block-group msc-section msc-call-section is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-wrap is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-call is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group msc-call-copy is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"msc-kicker wp-block-paragraph\">MULTISECU ADVICE<\/p>\n\n\n<h2 class=\"wp-block-heading\">Let\u2019s move from your question<br>to the right solution.<\/h2>\n\n\n<p class=\"wp-block-paragraph\">A photo of your installation and a few details help us prepare the diagnosis. In Annecy and the surrounding areas, we explain the options best suited to your needs.<\/p>\n\n<\/div>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"\/en\/contact\/\">Tell us what you need \u2197<\/a><\/div>\n\n\n<div class=\"wp-block-button is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link wp-element-button\" href=\"\/en\/tarifs\/\">View prices<\/a><\/div>\n\n<\/div>\n\n<\/div>\n\n<\/div>\n\n<\/section>\n\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Accueil\/Conseils de serrurier Choisir son \u00e9quipement Comment choisir une serrure de bo\u00eete aux lettres ? Une serrure de bo\u00eete aux lettres doit s\u2019adapter \u00e0 la porte, \u00e0 la came et au mode de distribution du courrier. La ressemblance ext\u00e9rieure de deux petits barillets ne suffit pas pour garantir leur compatibilit\u00e9. GUIDE PRATIQUE \u00b7 2 MIN [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":3423,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-3358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conseils"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Choose a Letterbox Lock | MULTISECU<\/title>\n<meta name=\"description\" content=\"Protect your mail from thieves! Discover our advice on how to choose the right letterbox lock for your needs.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.multisecu.fr\/en\/conseils\/comment-choisir-une-serrure-de-boite-aux-lettres\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Choose a Letterbox Lock | MULTISECU\" \/>\n<meta property=\"og:description\" content=\"Protect your mail from thieves! Discover our advice on how to choose the right letterbox lock for your needs.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.multisecu.fr\/en\/conseils\/comment-choisir-une-serrure-de-boite-aux-lettres\/\" \/>\n<meta property=\"og:site_name\" content=\"MULTISECU Serrurier Annecy\" \/>\n<meta property=\"article:published_time\" content=\"2024-08-01T12:57:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-10T12:20:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/multisecu.fr\/wp-content\/uploads\/2024\/08\/letterboxes-filled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1920\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Romain ROSA\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Romain ROSA\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/\"},\"author\":{\"name\":\"Romain ROSA\",\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/#\\\/schema\\\/person\\\/c4360f76348cbf8ab4a182754e6bcef3\"},\"headline\":\"Comment choisir une serrure de bo\u00eete aux lettres ?\",\"datePublished\":\"2024-08-01T12:57:49+00:00\",\"dateModified\":\"2026-10-10T12:20:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/\"},\"wordCount\":656,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.multisecu.fr\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/letterboxes-filled.jpg\",\"articleSection\":[\"Conseils de Serrurier\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/\",\"url\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/\",\"name\":\"Comment choisir une serrure de bo\u00eete aux lettres ? - MULTISECU Serrurier Annecy\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.multisecu.fr\\\/conseils\\\/comment-choisir-une-serrure-de-boite-aux-lettres\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.multisecu.fr\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/letterboxes-filled.jpg\",\"datePublished\":\"2024-08-01T12:57:49+00:00\",\"dateModified\":\"2026-10-10T12:20:38+00:00\",\"description\":\"Prot\u00e9gez votre courrier des voleurs ! 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