--- product_id: 265433048 title: "5420D Set Your Own Combination Portable Lock Box with Adjustable Shackle, 6 Key Capacity" brand: "master lock" price: "$150.06" currency: USD in_stock: true reviews_count: 5 category: "Master Lock" url: https://www.desertcart.ec/products/265433048-5420d-set-your-own-combination-portable-lock-box-with-adjustable store_origin: EC region: Ecuador --- # 4-digit customizable combo adjustable shackle fits multiple knob styles weather-resistant with vinyl coating 5420D Set Your Own Combination Portable Lock Box with Adjustable Shackle, 6 Key Capacity **Brand:** master lock **Price:** $150.06 **Availability:** ✅ In Stock ## Summary > 🔐 Secure your keys, secure your peace of mind—never get locked out again! ## Quick Answers - **What is this?** 5420D Set Your Own Combination Portable Lock Box with Adjustable Shackle, 6 Key Capacity by master lock - **How much does it cost?** $150.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/265433048-5420d-set-your-own-combination-portable-lock-box-with-adjustable) ## Best For - master lock enthusiasts ## Why This Product - Trusted master lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Capacious:** Holds up to 6 keys inside a sleek 2-7/8 inch wide lock box—perfect for real estate pros and busy managers on the go. - • **Built to Brave the Elements:** Durable metal body with vinyl-coated shackle and weather cover protects your keys indoors and outdoors. - • **Personalized Security, Your Way:** Set and reset thousands of unique 4-digit combinations for ultimate control and peace of mind. - • **Trusted Legacy, Modern Reliability:** From Master Lock, a brand synonymous with security since 1921, ensuring quality you can count on. - • **Universal Fit, Maximum Convenience:** Adjustable shackle cinches securely to lever, ball, biscuit, and tulip door knobs—no more compatibility worries. ## Overview The Master Lock 5420D is a portable, metal combination lock box featuring a customizable 4-digit code and an adjustable shackle that fits most door knob styles. Designed for both indoor and outdoor use, it offers weather-resistant protection with a vinyl-coated shackle and molded bumper. Compact yet spacious, it holds up to 6 keys securely, making it ideal for real estate, home security, and key storage needs. ## Description From the manufacturer About Us Master Lock is recognized around the world as the authentic, enduring name in padlocks and security products. Since our founding in 1921, we have worked hard to earn and maintain the trust of our customers by delivering on our promise of strength and quality and by continually setting new standards for lock design, application and performance. As the global manufacturer and marketer of padlocks, we continue to build our founder’s passion for innovation, quality, and compelling value into our expanding lines of security solutions. The Master Lock Company includes the Master Lock and Sentry Safe brands. It is part of the Doors & Security segment of Fortune Brands Home & Security, which also includes Therma-Tru Doors, Fiberon Decking and Fypon. Review: Ottima - Perfetto, super adattabile e capiente Review: Well constructed - Heavy and easy to use with clear instructions for set up. I’ll never get locked out again with my extra key safely tucked in my lock box. Well worth the price for peace of mind. ## Features - Adjustable shackle cinches lock box tightly and securely to most lever, ball, biscuit, and tulip door knob styles - Set your own 4 digit combination lock box for easy combination recall, set and reset your combination allowing thousands of personalized combination code options - For indoor and outdoor use, vinyl coated shackle and molded bumper prevent scratching, metal body construction for durability, weather cover protects combination dials from outdoor elements - 2-7/8 inches wide lock body, 3/8 inches diameter shackle with 1-3/4 inches MAX length, 3/4 inches minimum length, 1-13/32 inches width, internal dimensions: 4-3/16 inches height, 2-3/8 inches width, 1 inches depth ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FD2N88X | | Additional Features | Portable | | Best Sellers Rank | #86,684 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #275 in Combination Locks | | Brand | Master Lock | | Brand Name | Master Lock | | Color | Black | | Control Method | App | | Controller Type | Hand Control | | Customer Reviews | 4.6 out of 5 stars 835 Reviews | | Finish Types | Vinyl Coated | | Global Trade Identification Number | 00071649312694 | | Included Components | lock box, owners manual | | Item Dimensions | 5.2 x 7.3 x 17.8 centimeters | | Item Type Name | Set Your Own Combination Portable Lock Box with Adjustable Shackle | | Item Weight | 585 g | | Item dimensions L x W x H | 5.2 x 7.3 x 17.8 centimeters | | Lock Type | Combination Lock | | Lock type | Combination Lock | | Manufacturer | The Master Lock Company | | Manufacturer Part Number | 5420EC | | Material | Metal | | Material Type | Metal | | Model Name | 5420D | | Model Number | 5420EC | | Number of Pieces | 1 | | Recommended Uses For Product | Real Estate, Home Security, Key Storage | | Recommended uses for product | Real Estate, Home Security, Key Storage | | Shape | Rectangular | | Smart Home Compatibility | Not Smart Home Compatible | | Special features | Portable | | Style Name | Adjustable Shackle | | UPC | 071649312694 | | Unit Count | 1 Count | ## Product Details - **Brand:** Master Lock - **Item dimensions L x W x H:** 5.2 x 7.3 x 17.8 centimeters - **Lock type:** Combination Lock - **Material:** Metal - **Special features:** Portable ## Images ![5420D Set Your Own Combination Portable Lock Box with Adjustable Shackle, 6 Key Capacity - Image 1](https://m.media-amazon.com/images/I/51j47zV+XbL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Ottima *by D***O on 30 August 2025* Perfetto, super adattabile e capiente ### ⭐⭐⭐⭐⭐ Well constructed *by L***T on 30 July 2024* Heavy and easy to use with clear instructions for set up. I’ll never get locked out again with my extra key safely tucked in my lock box. Well worth the price for peace of mind. ### ⭐⭐⭐⭐⭐ Security first. *by B***T on 23 February 2026* Arrived early and is as described. Solidly built. ## Frequently Bought Together - Master Lock Black Portable Key Lock Box with Adjustable Shackle, Set/Reset Combination for Tenants, Guests, Clients, Ideal for Realtors, Landlords or Property Managers, Holds 6 Keys, 5420EC - Master Lock 5490D Retractable Lock Box Key Tether Small - Master Lock Key Lock Box, Outdoor Lock Box for House Keys, Key Safe with Combination Lock, 5 Key Capacity, 5400EC, Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ec/products/265433048-5420d-set-your-own-combination-portable-lock-box-with-adjustable](https://www.desertcart.ec/products/265433048-5420d-set-your-own-combination-portable-lock-box-with-adjustable) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-10-30*