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2. Kitchen hood - Wikipedia

   en.wikipedia.org/wiki/Kitchen_hood

   A kitchen hood, exhaust hood, hood fan, extractor hood, or range hood is a device containing a mechanical fan that hangs above the stove or cooktop in the kitchen. It removes airborne grease, combustion products, fumes, smoke, heat, and steam from the air by evacuation of the air and filtration. [ 1 ]

3. Window screen - Wikipedia

   en.wikipedia.org/wiki/Window_screen

   A window screen (also known as insect screen, bug screen, fly screen, flywire, wire mesh, or window net) is designed to cover the opening of a window. It is usually a mesh made of metal, fibreglass , plastic wire, or other pieces of plastic and stretched in a frame of wood or metal.

4. Duct (flow) - Wikipedia

   en.wikipedia.org/wiki/Duct_(flow)

   Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

5. List of applications of stainless steel - Wikipedia

   en.wikipedia.org/wiki/List_of_applications_of...

   The largest use of stainless steel in cars is the exhaust line. Environment protection requirements aimed at reducing pollution and noise for the entirety of a car's lifespan led to the use of ferritic stainless steels (typically AISI409/409Cb in North America, EN1.4511 and 1.4512 in Europe).

6. Trump criticizes Ukraine's use of US missiles for attacks ...

   www.aol.com/news/trump-criticizes-ukraines-us...

   WASHINGTON (Reuters) - U.S. President-elect Donald Trump criticized Ukraine's use of U.S.-supplied missiles for attacks deep into Russian territory in a Time magazine interview published on ...

7. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   For residential buildings, which mostly rely on infiltration for meeting their ventilation needs, a common ventilation rate measure is the air change rate (or air changes per hour): the hourly ventilation rate divided by the volume of the space (I or ACH; units of 1/h). During the winter, ACH may range from 0.50 to 0.41 in a tightly air-sealed ...