Style 8 links are commonly used on fire doors smoke and heat vents and ducts.
Fire door damper.
Style 9 links are good for range hood applications.
So the question is whether this elevator machine room is considered a door in a corridor or smoke barrier.
Has provided underwriters laboratory approved fire dampers as well as other essential products for the h v a c.
Your fire needs this air circulation in order to burn.
Style 10 links are designed for use on dampers.
Since the development of modern fire damper protection equipment lloyd industries inc.
In the opening protectives section of nfpa 101 it says 8 4 3 3 doors shall not include louvers so that would apply to any fire door assembly unless there was a specific exception.
This area of entry is called the damper.
Louvers are also prohibited in smoke partitions.
Style 6 and 7 links are often used on fire doors windows hatches dampers and blowers.
Fire dampers are passive fire protection products used in heating ventilation and air conditioning hvac ducts to prevent the spread of fire inside the ductwork through fire resistance rated walls and floors.
Products for over 35 years.
When a rise in temperature occurs the fire damper.
Lloyd industries has been an active manufacturer of access doors fire and smoke dampers and h v a c.
This is the most common style on many stock door models.
It is designed for use with doors that feature very narrow frames and a large glass viewing area.
Installed inside hvac ductwork the damper blades automatically close when a rise in temperature occurs or a smoke alarm goes off.
Curtain fire dampers gilberts smoke and fire control division manufacture a full range of products designed to serve the smoke fire protection industry including duct mounting combination smoke fire dampers door and wall mounting smoke fire dampers and duct mounting fire dampers.
Fire smoke dampers are similar to fire dampers in fire resistance rating and also prevent the spread of smoke inside the ducts.
Fire dampers are ul555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems designed to close upon the detection of heat.