--- product_id: 44840897 title: "Marks Lock 21 Series Satin Chrome UNILOCK 21AC Mortise Lock for Security Door and Storm Door (Left Handed)" brand: "marks usa" price: "€ 328.16" currency: EUR in_stock: true reviews_count: 1 category: "Marks Usa" url: https://www.desertcart.pt/products/44840897-marks-lock-21-series-satin-chrome-unilock-21ac-mortise-lock store_origin: PT region: Portugal --- # Two keyed-alike cylinders included Lifetime mechanical warranty Solid brass thru-bolted trim Marks Lock 21 Series Satin Chrome UNILOCK 21AC Mortise Lock for Security Door and Storm Door (Left Handed) **Brand:** marks usa **Price:** € 328.16 **Availability:** ✅ In Stock ## Summary > 🔐 Elevate your door security with style and confidence—lock in the future today! ## Quick Answers - **What is this?** Marks Lock 21 Series Satin Chrome UNILOCK 21AC Mortise Lock for Security Door and Storm Door (Left Handed) by marks usa - **How much does it cost?** € 328.16 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/44840897-marks-lock-21-series-satin-chrome-unilock-21ac-mortise-lock) ## Best For - marks usa enthusiasts ## Why This Product - Trusted marks usa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Fit:** Reversible mortise lock with 1" bolt and 1/2" latch projection fits standard 1" thick doors perfectly. - • **Effortless Security:** Includes two keyed-alike cylinders for seamless access inside and out—no fumbling for multiple keys. - • **Unmatched Durability:** Solid brass construction with thru-bolted trim ensures long-lasting security and style. - • **Peace of Mind Guaranteed:** Backed by a lifetime mechanical warranty—because your security deserves nothing less. - • **Sleek Satin Chrome Finish:** Modern satin chrome elevates your door’s aesthetic while resisting wear and tear. ## Overview The Marks Lock 21 Series Satin Chrome UNILOCK 21AC Mortise Lock is a premium, left-handed security solution designed for storm and security doors. Featuring solid brass construction, a reversible mortise lock body, and a sleek satin chrome finish, it includes two keyed-alike cylinders and a lifetime mechanical warranty, ensuring reliable, stylish protection for your home or office. ## Description The box include the Complete Marks USA Mortise Lockset (Knobs, Two cylinders Keyed alike for inside and outside, Marks USA Mortise Lock Body 90A, Strike Plate, and Two Keys) The Marks USA 21AC UniLock Mortise Lockset is available in Satin Chrome Finish 21AC/26D and Bright Brass 21AC/3. Features: Lifetime Mechanical Warranty Thru-bolted, Solid Brass Trim Specifications: Door thickness: 1" Series 9 lock body, Backset: 2-1/2" Reversible mortise lock 1" bolt, 1/2" latch projection Lock front: 1" x 7-1/8" Thru-bolted solid brass trim assemblies Spring loaded captivated spindles Review: Even though I loved the look the Association didn’t so I got it ... - Even though I loved the look the Association didn’t so I got it back now I need to figure out what to do with it. ## Features - MARKS LOCK 21 SERIES UNILOCK 21AC MORTISE LOCK FOR SECURITY DOOR AND STORM DOOR ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06Y2HQRH8 | | Best Sellers Rank | #2,665,789 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,963 in Screen Door Hardware | | Brand | Marks USA | | Brand Name | Marks USA | | Color | Satin Chrome | | Connectivity Protocol | Wi-Fi | | Controller Type | Mechanical knob | | Customer Reviews | 4.6 out of 5 stars 4 Reviews | | Finish Types | chrome finish | | Included Components | Knobs, Two cylinders Keyed alike for inside and outside, Marks USA Mortise Lock Body 90A, Strike Plate, and Two Keys | | Lock Type | Key Lock | | Manufacturer | MARKS USA | | Manufacturer Part Number | 21ACSCLH | | Material | Brass | | Material Type | Brass | | Model Number | 0709951504512 | | Recommended Uses For Product | securing doors | | Style | Left handed | | Style Name | Left handed | | UPC | 709951504512 | ## Images ![Marks Lock 21 Series Satin Chrome UNILOCK 21AC Mortise Lock for Security Door and Storm Door (Left Handed) - Image 1](https://m.media-amazon.com/images/I/51JQnMilI3L.jpg) ## Customer Reviews ### ⭐⭐⭐ Even though I loved the look the Association didn’t so I got it ... *by P***K on February 27, 2018* Even though I loved the look the Association didn’t so I got it back now I need to figure out what to do with it. --- ## 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.pt/products/44840897-marks-lock-21-series-satin-chrome-unilock-21ac-mortise-lock](https://www.desertcart.pt/products/44840897-marks-lock-21-series-satin-chrome-unilock-21ac-mortise-lock) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-06*