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Tornado dampers: Greenheck

March 4, 2013

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The heavy duty dampers are double-flanged, channel-frame style backdraft dampers.

Duct systems: DuctSox

February 28, 2013

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The company has expanded its SkeleCore™ offerings.

Are We Unknowingly Wrong-Sizing Ducts?

October 31, 2012

By Ernie MacFerran

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A small team led by an award-winning Florida engineer decided to test conventional wisdom about pressure loss, both in a straight run and in comparing supply and exhaust scenarios. Early returns suggest the data may be flowing in an unexpected fashion.

Case In Point

Cancer center finds peace and quiet with duct liner

October 19, 2012

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A lot will happen under the single rooftop of the new Wesley Long Cancer Center in Greensboro, NC. The 33,000-sq-ft addition to the Moses Cone Regional Cancer Center includes a business office, lobby/waiting area, admitting, phlebotomy lab, breast cancer treatment, exam areas, chemotherapy, an auditorium, and education classrooms.

Up The Commercial Kitchen Ventilation Hood Type I Stack: No Problems Or Complaints

August 27, 2012

By John Clark, P.E.

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Leakage caused by modern cleaning techniques, evolving codes, increased airflow requirements ... kitchen ventilation design has become more complicated than the old sizing and design challenges. Of course, they’re still around, too. Grease is the word, so review these tips to keep it from popping up in the wrong places.

Case In Point

Library earns LEED, foils complaints with UFAD

February 29, 2012

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Patrick Baldwin-McCurdy fields daily indoor air temperature requests from employees and students, but Seattle University’s (SU) lead buildings control technician rarely hears HVAC complaints from the college’s new library addition featuring under floor air distribution (UFAD).

Church retrofit looks upward, finds an answer in fabric duct

April 1, 2011

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Fabric duct installation at this North Carolina church has reduced mold and saved space.It’s difficult to believe that a routine item such as HVAC ductwork could have as great affect

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