Frame: Made from high quality plastic (ABS plastic) as standard and polystyrene as option with 30mm width.
Core: Made from high quality plastic (ABS plastic) as standard. And polystyrene as option
Frame and core made from high quality plastic (ABS plastic)
Special aerodynamic disk valve design ensures uniform air distribution.
Smooth air pass regulation due to rotation of central part of the damper.
Easy mounting with spacing lugs and mounting flange with a lock ring.
The internal part has a sealing ring for more tight fit.