{"product_id":"3m-fire-barrier-putty-sleeve-kit-dt-400-4-in-round-1-case-firestop-for-data-telecom","title":"3M Fire Barrier Putty Sleeve Kit DT 400 – 4 in Round, 1\/case | Firestop for Data \u0026 Telecom","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eIntroducing the 3M Fire Barrier Putty Sleeve Kit DT 400, a ready-to-use firestop solution crafted for data and telecom cable penetrations in walls or floors. This 4-inch round kit is tested for up to 4 hours of fire-rated through-penetration performance in line with ASTM E814 (UL 1479). Designed for both new installations and retrofits, it aims to provide a practical, dependable option for managing fire and smoke pathways around cables.\u003c\/p\u003e\n\u003cp\u003eOne notable attribute is the elimination of gasket handling, which can streamline installation. The sleeve’s rolled lip helps cables enter smoothly, while brackets and the sleeve work together to reduce movement during application. The DT 400 kit supports both new construction and retrofit data and telecom cable firestop tasks, making it a versatile addition to many on-site workflows.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReady-to-install kit for complete cable firestop or blank firestop installations\u003c\/li\u003e\n  \u003cli\u003eTested up to 4 hours for fire-rated through-penetration systems in accordance with ASTM E814 (UL 1479)\u003c\/li\u003e\n  \u003cli\u003eNo gasket required, simplifying the installation process\u003c\/li\u003e\n  \u003cli\u003eRolled-out lip on the sleeve guides cables and reduces entry friction\u003c\/li\u003e\n  \u003cli\u003eBrackets and sleeve collaborate to help prevent slipping during installation\u003c\/li\u003e\n  \u003cli\u003eSupports both new and retrofit data and telecom cable firestop installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNew construction projects needing reliable firestop around data\/telecom cables\u003c\/li\u003e\n  \u003cli\u003eRetrofit or existing installations where penetrations require a tested solution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eThe kit brings together a sleeve and brackets designed for straightforward use around cable penetrations. The smooth entry path provided by the rolled lip helps installers feed cables with less resistance, while the brackets help hold components in place to minimize shifting as you work. With a focus on ease of use, the DT 400 kit integrates into common firestop workflows without requiring additional gaskets or fittings.\u003c\/p\u003e\n\u003cp\u003eIn practice, technicians can deploy the kit in both new and retrofit projects to address penetrations through walls or floors where fire and smoke containment is important. The combination of a pre-packaged sleeve plus mounting hardware offers a pragmatic approach to meeting firestop objectives while supporting efficient field installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose 3M\u003c\/h3\u003e\n\u003cp\u003e3M brings a long history of building science and validated firestop solutions. The DT 400 Putty Sleeve Kit consolidates essential components into a single, ready-to-use package designed to fit typical data and telecom cabling scenarios. It presents a practical option for teams seeking a dependable, straightforward firestop solution without overpromising outcomes.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the 3M Fire Barrier Putty Sleeve Kit DT 400 used for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Seals cable penetrations in walls or floors to resist fire and smoke; designed for data and telecom cables; tested up to 4 hours per ASTM E814 (UL 1479).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What installation advantages does the kit offer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Ready-to-install, no gasket required; rolled lip eases cable entry; brackets prevent slipping; suitable for new and retrofit installations.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":48406584230045,"sku":"B0056JBGDA","price":137.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/3m-fire-barrier-putty-sleeve-kit-dt-400-box.jpg?v=1781139819","url":"https:\/\/nexoltic.com\/products\/3m-fire-barrier-putty-sleeve-kit-dt-400-4-in-round-1-case-firestop-for-data-telecom","provider":"Nexoltic","version":"1.0","type":"link"}