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2013 World Pork Expo New Product Tour: Ro-Main No BackDraft Control

An airtight fan cover keeps unfiltered air from buildings

Lora Berg 1

July 15, 2013

2 Min Read
2013 World Pork Expo New Product Tour: Ro-Main No BackDraft Control
<p> Jacquelin Labrecque (right) explains how the No BackDraft fan cover operates.</p>

The Ro-Main No BackDraft Control is a specially designed fan cover that prevents non-filtered air and pathogens from entering buildings when the fan is not running.

A damper automatically shuts the fan cover, making an airtight seal when the fan stops running, explained Jacquelin Labrecque, the product’s inventor and part of a family who owns a 3,000-sow farm in Canada. When the fan is operating, the cover provides minimal restriction of airflow. “My family found that products were either good at sealing the fan, or letting air flow freely, but not good at both. We developed the No BackDraft Control to use negative pressure to help seal the fan.”

The cover has a fiberglass design. No electricity is required. A gear-and-spring mechanism helps close the cover tightly when the fan is not in use. When the fan is turned on, the mechanism will be reversed to help the fan open the cover. Labrecque noted the cover adapts to any type of wall fan, and can be used in filtered and unfiltered barns. The No BackDraft Control is built to withstand pressure-washer cleaning. Labrecque added that no winter cover is needed.

Leon Sheets asked if adjustments needed to be made when the cover was in the open position in order to avoid restricting the fan. Labrecque said the optimal angle for the opening the cover is 45-60 degrees.

Steve Hoff asked how much fan capacity would be lost when using the cover. Labrecque says tests have shown an air restriction of only 4%.

The No BackDraft Control has undergone testing at the University of Minnesota, where researchers concluded that the product successfully helps prevent the airborne porcine reproductive and respiratory syndrome (PRRS) virus from entering buildings through an idle fan.

“This product also has the application for fans that are set up as emergency backup fans,” Paul Yeske said.

The cost of a No BackDraft cover to fit a 48-in. fan is $900.

Learn more at www.ro-main.com.

About the Author(s)

Lora Berg 1

Editor, National Hog Farmer

Lora is the editor of National Hog Farmer. She joined the National Hog Farmer editorial team in 1993, served as associate editor, managing editor, contributing editor, and digital editor before being named to the editor position in 2013. She has written and produced electronic newsletters for Farm Industry News, Hay & Forage Grower and BEEF magazines. She was also the founding editor of the Nutrient Management e-newsletter.

Lora grew up on a purebred Berkshire operation in southeastern South Dakota and promoted pork both as the state’s Pork Industry Queen and as an intern with the South Dakota Pork Producers Council. Lora earned her bachelor’s and master’s degrees from South Dakota State University in agricultural journalism and mass communications. She has served as communications specialist for the National Live Stock and Meat Board and as director of communications for the University of Minnesota College of Agricultural, Food and Environmental Sciences. During her career, Lora earned the Story of the Year award from the American Agricultural Editors’ Association and bronze award at the national level in the American Society of Business Publication Editors’ competition. She is passionate about providing information to support National Hog Farmer's pork producer readers through 29 electronic newsletter issues per month, the monthly magazine and nationalhogfarmer.com website.

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