Extract air diffuser
Simple to install
Large throttling range
High natural attenuation
Lockable adjustment
Spring mounting
The EXF consists of three parts: the outer cone, inner cone and spring fasteners. Mounting frames are selectable with nipple or sleeve connection to ducts. The extract air valve has spring fasteners for securing it to the mounting frame. The aerodynamically designed outer cone has a sealing strip for a tight fit against the mounting frame. The inner cone, which is suspended on a threaded spindle inside the outer cone, is adjustable and can be locked in position.