{"product_id":"lever-extension-flush-bolt-for-fire-rated-plastic-wood-covered-doors-rockwood-557","title":"Lever Extension Flush Bolt for Fire Rated Plastic \u0026 Wood covered Doors, Rockwood 557","description":"\u003cp\u003eThe Rockwood 557 Lever Extension Flush Bolt is designed for fire-rated plastic and wood covered doors. Constructed from cast brass, this unit maintains door strength using a corner reinforcing plate and is compatible with our 570 Dust Proof Strike.\u003c\/p\u003e\u003cp\u003eThis flush bolt is engineered for doors measuring up to 4'w x 10'h and rated up to and including 1-1\/2 hours. The 3\/4\" backset allows for precise alignment and operation, ideal for high-traffic applications where door stability is critical.\u003c\/p\u003e\u003cp\u003eThe unit accepts optional Torx security screws to discourage tampering and is available with a bottom fire bolt, such as the 557x19BFB.\u003c\/p\u003e","brand":"Rockwood","offers":[{"title":"Default Title","offer_id":53031070138657,"sku":"RKW-557","price":37.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/1489\/3857\/files\/AADSS1012429.jpg?v=1784148827","url":"https:\/\/www.doorware.com\/products\/lever-extension-flush-bolt-for-fire-rated-plastic-wood-covered-doors-rockwood-557","provider":"Doorware.com","version":"1.0","type":"link"}