--- title: "Achieve 100% Total Darkness | LightLock™ by Hunter Douglas" description: "Discover LightLock™ by Hunter Douglas — the only system providing 100% total darkness. Learn how the Duette LightLock system works." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Article", "headline": "Achieve 100% Total Darkness | LightLock™ by Hunter Douglas", "description": "Discover LightLock™ by Hunter Douglas — the only system providing 100% total darkness. Learn how the Duette LightLock system works.", "author": { "@type": "Organization", "name": "Linen Chest" } }, { "@context": "https://schema.org", "@type": "Article", "headline": "Window Coverings: Achieve 100% Total Darkness", "description": "Discover LightLock™ by Hunter Douglas — the only system providing 100% total darkness. Learn how the Duette LightLock system works.", "author": { "@type": "Organization", "name": "Alyssa Leibner" }, "datePublished": "2019-01-23", "image": "https://www.linenchest.com/media/magefan_blog/2019/01/dddd.jpg", "publisher": { "@type": "Organization", "name": "Custom Window Coverings" } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "/" }, { "@type": "ListItem", "position": 2, "name": "Learning Center", "item": "/learn" }, { "@type": "ListItem", "position": 3, "name": "Window Coverings: Achieve 100% Total Darkness" } ] } ] --- **Spring Sale:** 20% OFF all custom blinds & drapery fabrics + $100 Gift Card for every $1,000 spent! Ends April 30, 2026. [Claim Offer →](/booking) Menu [![Linen Chest — Proudly Canadian](/assets/LC_Logo_EN_Desktop-CnGRXV9J.svg)](/)![Over 1 million blinds installed in Canada](/assets/canada-badge-DmtoqskL.svg) Blinds & Shades [Shutters](/shades)[Draperies](/en_ca/custom-window-coverings/drapery)[Learning Center](/learn) [1-855-786-7354 ](tel:1-855-786-7354)EN · FR [Get a Free Quote Get a Free Quote ](/booking) 1. [Home](/) 2. [Learning Center](/learn) 3. Window Coverings: Achieve 100% Total Darkness Problem Solvers # Window Coverings: Achieve 100% Total Darkness Want to achieve 100% darkness in your room? Introducing LightLock™ by Hunter Douglas — the only system of its kind. Alyssa Leibner January 23, 2019 3 min read ![Window coverings achieving total darkness with LightLock](https://www.linenchest.com/media/magefan_blog/2019/01/dddd.jpg) ## Introducing LightLock™ by Hunter Douglas Want to achieve **100% darkness** in your room? Introducing **LightLock™** by Hunter Douglas. Fitting securely into the window frame, the Duette® LightLock™ system is the only one of its kind to provide 100% total darkness. Its innovative U-shaped side channels feature a black, ridged interior surface that traps and absorbs light of all strengths and from all angles, leaving rooms completely dark. ![LightLock system by Hunter Douglas](https://www.linenchest.com/media/magefan_blog/2019/01/Screen-Shot-2019-01-23-at-1.37.09-PM-1024x571.png) ## Gorgeous Fabric Options Duette® Honeycomb Shades are available in an expansive range of colours, patterns and textures to match any decor. Hunter Douglas travels the world to find luxurious fabrics to create window treatments that enhance your interiors while providing superior energy efficiency, light diffusion and privacy. ![Duette Honeycomb Shades fabric options](https://www.linenchest.com/media/magefan_blog/2019/01/fabric-options-main_0-1024x683.jpg) ## Ready to Upgrade Your Window Coverings? Our specialists can help you choose the perfect blinds, shades, or drapery for your home. Book a free consultation and get expert advice tailored to your space. [Book a Free Consultation](/booking)[Contact a Specialist](/contact) Blackout LightLock Hunter Douglas Total Darkness Bedroom In This Article 1. [1\. Introducing LightLock™ by Hunter Douglas](#lightlock) 2. [2\. Gorgeous Fabric Options](#fabric-options) ### Related Articles [ Product Education ### What Is a Duolite Shade? A Perfect Balance of Light and Privacy May 7, 2025 6 min read ](/learn/what-is-a-duolite-shade)[ Room Guides ### Update Your Window Coverings in the Bedroom July 23, 2018 3 min read ](/learn/update-window-coverings-bedroom)[ Product Education ### Curtain Opacity 101: Finding the Right Light for Your Space May 7, 2025 6 min read ](/learn/curtain-opacity) ## Ready to Transform Your Windows? 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