The No BackDraft is a high-performance backdraft control system engineered for air-filtered barn environments. Its patented automatic open/close mechanism delivers complete airtightness without compromising fan efficiency, setting a new standard in ventilation management for modern facilities.
When the fan is running, the damper maintains the precise angle required to maximize airflow. Upon shutdown, it seals firmly against a rubber gasket under sustained pressure. Fully passive by design, the system requires no electricity and delivers reliable, low-maintenance performance from the moment it is installed.
The improved CFM/Watt ratio enhances fan energy efficiency while maintaining performance.
Enables removal of original fan louvers to boost efficiency while maintaining protection against contaminated air infiltration.
Insulated damper eliminates the need for an insulated winter fan cover.
✔ Improper fan backdraft solutions risk your air filtration investment.
✔ Other fan backdraft solutions are costly or compromise airtightness.
✔ Fan louvers and air chutes hinder ventilation efficiency and wear out fan motors faster.
"QUICK AND EASY INSTALLATION ON ANY FAN TYPE OR SIZE UP TO 55”
ADAPTS TO ANY EXISTING OR NEW BUILDING WALL FANS
DOES NOT DECREASE THE PERFORMANCE OF YOUR FANS
ROBUST PRODUCT REQUIRING ONLY MINIMAL MAINTENANCE
"
| Air infiltration | Less than 1 CFM/sq.fr |
| Airflow restriction | 1% |
