auto damper

Thermostatically Controlled

AUTOMATICALLY OPENS WHEN YOUR BUILDING OR ATTIC NEEDS MAXIMUM VENTILATION AND AUTOMATICALLY CLOSES TO REDUCE EXCESSIVE VENTILATION

* USES NO ELECTRICITY

* BUILDING or ATTIC TEMPERATURE OPERATES DAMPER

* DAMPER STARTS TO OPEN AT 95 F AND CLOSES AT 65 F

* REDUCES HEAT LOSS IN WINTER

* REQUIRES NO MAINTENANCE

* EASY AND INEXPENSIVE TO INSTALL

* INSTALLED IN OVER 275,000 BUILDINGS

* GUARANTEED FOR 10 YEARS

SAVES MONEY/ENERGY YEAR ROUND

Tells Your Ventilator When and When Not to Ventilate

B23 damper open

B22 damper closed

Closed

Open

Patent Issued