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        1. Home
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        5. Life Safety Dampers
        6. Combination Fire Smoke Dampers
        Combination Fire Smoke Dampers
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        • 1.5 Hour Fire Rated Dampers https://catalog-api.greenheck.com/api/category/en-us/138
        • 3 Hour Fire Rated Dampers https://catalog-api.greenheck.com/api/category/en-us/143
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        Damper Selection Guide
        Which damper best fits the application? Greenheck’s damper interactive selection guide removes the guesswork. Find blade type, velocity, pressure, AMCA listings, submittals, drawings and more, all in one easy-to-use format.
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        Getting a quote on new equipment is now even easier.  Submit a request online to receive a quote from your local Greenheck representative. 
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        We have a wide range of OEM parts for your products.  Easy to find, easy to order.  All online.

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        Combination Fire Smoke Dampers

        UL 555 and UL 555S classified

        Combination fire and smoke dampers are used in heating, ventilation, and air conditioning (HVAC) to protect duct and air transfer opening penetrations through fire smoke rated construction (walls and floors). These dampers are UL 555 and UL 555S classified.

        1.5 Hour Fire Rated Dampers

        1.5 Hour Fire Rated Dampers

        Provide fire and smoke resistance in the duct and air transfer openings through fire smoke rated construction using round, rectangular and out of wall dampers.

        VIEW 1.5 Hour Fire Rated Dampers
        https://catalog-api.greenheck.com/api/category/en-us/138
        3 Hour Fire Rated Dampers

        3 Hour Fire Rated Dampers

        Class I leakage rating with airfoil blades and pressure up to 8 in. wg, velocity to 4,000 fpm and temperature to 350°F.

        VIEW 3 Hour Fire Rated Dampers
        https://catalog-api.greenheck.com/api/category/en-us/143
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