{"product_id":"salsbury-11-door-high-recessed-mounted-4c-horizontal-mailbox-with-20-doors-with-usps-access-front-loading","title":"Salsbury 11 Door High Recessed Mounted 4C Horizontal Mailbox with 20 Doors with USPS Access - Front Loading","description":"\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Salsbury 3711D-20AFU is a USPS-approved, recessed-mounted 4C horizontal mailbox manufactured to USPS-STD-4C specifications for new construction and major renovation projects in apartments, commercial buildings, and residential developments. Configured as a double-column, 11-door-high unit at 41⅜\" tall, it accommodates 20 MB1 tenant compartments in a lower-profile wall-recessed installation suited to buildings where ceiling height, architectural constraints, or ADA compliance requirements preclude a full maximum-height unit. Constructed from heavy-duty aluminum with stainless steel hardware, the unit includes factory-installed trim, a solid rear cover, and a 4C connector kit for linking multiple units. A USPS master-lock outgoing mail compartment with weather protection hood is integrated per standard 4C requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSecurity \u0026amp; Construction Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUSPS-approved outgoing mail\/carrier access door with factory-provisions for USPS-installed master lock\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e20 tenant doors each fitted with a heavy-duty cam lock with dust\/rain shield and 3 keys\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOutgoing mail slot: 10¾\" W × ¾\" H with weather protection hood\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHeavy-duty aluminum construction with stainless steel hardware\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDurable powder-coated finish available in aluminum, bronze, black, and sandstone\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFactory-installed ¾\" W × ¼\" D trim with solid rear cover for clean recessed installation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIncludes 4C horizontal mailbox connector kit for linking multiple units (hardware included)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eADA height compliant units available\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured to USPS-STD-4C Specifications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eISO 9001:2015 certified;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; font-family: sans-serif;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; text-align: center; font-weight: bold; letter-spacing: 0.08em; font-size: 12px; text-transform: uppercase;\" colspan=\"2\"\u003eSpecifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500; width: 40%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003e31.125\" W × 41.375\" H × 16.5\" D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003e145 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eNumber of Tenant Doors\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003e20 (MB1 Size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eMB1 Door Dimensions\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003e13¼\" W × 3¼\" H each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eNumber of Parcel Lockers\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eNone included – parcel lockers available as separate units per USPS 1:5 ratio requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eColumn Configuration\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eDouble Column (2 Doors Wide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eUnit Height Category\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003e11 Door High\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eLock Type\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eHeavy-Duty Cam Lock with Dust\/Rain Shield (3 Keys per Door)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eOutgoing Mail Slot\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003e10¾\" W × ¾\" H with Weather Protection Hood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eLoading Type\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eFront Loading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eMount Type\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eRecessed Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eAccess Type\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eUSPS Access – USPS Master Lock Installed by Carrier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eIndoor \/ Outdoor Use\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eBoth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003ePrimary Material\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eHeavy-Duty Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eHardware\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003ePowder Coated – Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eAvailable Colors\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eAluminum, Bronze, Sandstone, Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eIntended Use\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eApartments, Commercial Buildings, Residential Developments – New Construction and Major Renovations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eWhat's Included\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eMailbox Unit, Factory-Installed Trim (¾\" W × ¼\" D), Solid Rear Cover, 4C Horizontal Mailbox Connector Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f9f9f9; border: 1.5px solid black; padding: 8px 12px; font-weight: 500;\"\u003eModel Number\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003e3711D-20AFU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cstrong\u003eCompliance \u0026amp; Certifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUSPS Approved | ISO 9001:2015 Certified | ADA Height Compliant Units Available\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eLead Time\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUsually ships within \u003cspan\u003e1-2 weeks \u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDownloads\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/Recessed_Mounted_4C_Horizontal_Mailboxes.pdf?v=1778309478\" target=\"_blank\"\u003eMore Product Information\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/4C_HORIZONTAL_MAILBOXES.pdf?v=1778309688\" target=\"_blank\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/4C_Recessed_Mounted_Horizontal_Mailboxes_3700_SeriesFRONT_LOADING_Installation_Instructions.pdf?v=1778309810\" target=\"_blank\"\u003eInstallation Instructions\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/Teachnical_drwaing.pdf?v=1778309892\" target=\"_blank\"\u003eTechnical Drawing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/Technical_drawing_006779e0-9c5b-45a1-a89d-91c83271d59f.pdf?v=1778310069\" target=\"_blank\"\u003eADA Compliant Units\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/Standard_Recessed_Mounted_4C_Horizontal_Mailbox_Configurations.pdf?v=1778310158\" target=\"_blank\"\u003eProduct Configurations\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Salsbury Mailbox","offers":[{"title":"Aluminum","offer_id":48913477632228,"sku":"3711D-20AFU","price":2367.0,"currency_code":"USD","in_stock":true},{"title":"Bronze","offer_id":48913477664996,"sku":"3711D-20ZFU","price":2367.0,"currency_code":"USD","in_stock":true},{"title":"Sandstone","offer_id":48913477697764,"sku":"3711D-20SFU","price":2367.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":48913477730532,"sku":"3711D-20BFU","price":2367.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/Salsbury_11_Door_High_Recessed_Mounted_4C_Horizontal_Mailbox_with_20_Doors_with_USPS_Access_-_Front_Loading.png?v=1778649047","url":"https:\/\/securezoned.com\/products\/salsbury-11-door-high-recessed-mounted-4c-horizontal-mailbox-with-20-doors-with-usps-access-front-loading","provider":"Secure Zoned","version":"1.0","type":"link"}