{"product_id":"salsbury-maximum-height-recessed-mounted-4c-horizontal-mailbox-15-doors-and-3-parcel-lockers-with-usps-access-rear-loading","title":"Salsbury Maximum Height Recessed Mounted 4C Horizontal Mailbox | 15 Doors and 3 Parcel Lockers with USPS Access - Rear Loading","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Salsbury 3716D-15ARU 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, maximum-height unit at 57⅛\" tall, it accommodates 15 MB1 tenant compartments and 3 parcel lockers, 2 PL4.5s (15½\" H) and 1 PL5 (17¼\" H), in a rear-loading configuration suited to pass-through wall installations where carrier mail delivery is accessed from behind the unit through heavy-duty rear access doors with latches and continuous hinges. All 3 parcel lockers meet and exceed the USPS minimum 15\" height threshold, satisfying the 1:5 ratio for this compartment count. Constructed from heavy-duty aluminum with stainless steel hardware, the unit includes factory-installed trim and a 4C connector kit for linking multiple units.\u003c\/p\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 compartment with fixed front panel  no USPS master lock access door on front\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e15 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\"\u003e3 integrated parcel lockers 2 × PL4.5 (15½\" H) and 1 × PL5 (17¼\" H); all exceed USPS 1:5 ratio requirement\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHeavy-duty rear access doors with latches and continuous hinges for carrier mail loading\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOutgoing mail slot: 11¾\" 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, sandstone, and black\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFactory-installed 1\" W × ¼\" D trim 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\u003cbr\u003e\n\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\u003eSpecification\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: rgb(249, 249, 249); border: 1.5px solid black; padding-top: 8px; padding-right: 12px; padding-bottom: 8px; 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 × 57.125\" 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;\"\u003e165 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;\"\u003e15 (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;\"\u003e12¾\" 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;\"\u003e3 (2 × PL4.5, 1 × PL5)\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;\"\u003eParcel Locker Heights\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003ePL4.5: 15½\" H  |  PL5: 17¼\" H (all exceed USPS 1:5 ratio requirement)\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;\"\u003eMaximum Height\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;\"\u003e11¾\" 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;\"\u003eCarrier Access\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eRear Access – Heavy-Duty Rear Door(s) with Latch and Continuous Hinges (no front USPS master lock 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;\"\u003eLoading Type\u003c\/td\u003e\n\u003ctd style=\"border: 1.5px solid black; padding: 8px 12px;\"\u003eRear 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 – Rear 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;\"\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 (1\" W × ¼\" D), Heavy-Duty Rear Access Door(s) with Latch and Continuous Hinges, 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;\"\u003e3716D-15ARU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCompliance \u0026amp; Certifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\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 1–2 weeks.\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":48989795254500,"sku":"3716D-15ARU","price":3321.0,"currency_code":"USD","in_stock":true},{"title":"Bronze","offer_id":48989795287268,"sku":"3716D-15ZRU","price":3321.0,"currency_code":"USD","in_stock":true},{"title":"Sandstone","offer_id":48989795320036,"sku":"3716D-15SRU","price":3321.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":48989795352804,"sku":"3716D-15BRU","price":3321.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/9423\/4596\/files\/Salsbury_Maximum_Height_Recessed_Mounted_4C_Horizontal_Mailbox_15_Doors_and_3_Parcel_Lockers_with_USPS_Access_-_Rear_Loading.png?v=1779348680","url":"https:\/\/securezoned.com\/products\/salsbury-maximum-height-recessed-mounted-4c-horizontal-mailbox-15-doors-and-3-parcel-lockers-with-usps-access-rear-loading","provider":"Secure Zoned","version":"1.0","type":"link"}