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Article content provided by Ruskin.

 offers HVAC design engineers a low leak high performance combination 1.5 hour fire and Class I leakage smoke damper provided with an integral sleeve/frame design.

 also provides:

• Barrier to stop flame & smoke
• Most cost effective fire/smoke damper for building owners
• Best pressure drop performance for energy savings
• Smallest size industry wide

 experts are always ready to help you with UL and Building Code questions.  a solution for “problem applications”.

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The world's leading manufacturer of innovative and quality air control products, including manual dampers, fire dampers, smoke dampers, combination fire/smoke dampers, louvers, air measuring stations and sound attenuators.