DESCRIPTION:
Circular gate reinforced neoprene girth seal, and preparation for electric actuator (not included).
MATERIALS:
completely made of galvanized steel.
FINISH:
Galvanized.
AVAILABLE SIZES:
Available in sizes from 6-18 inches.
* Option with electric actuator (sold separately).
APPLICATIONS:
To use duct systems that require adjustment of the air volume.
* Note.- In its fully closed position is leaking 0.15 cfm per inch in circumference.