CRSL is a constant air flow controller without power supply. It is made of galvanized steel with an aluminum sheet adjusting damper, EPDM rubber gasket and nylon bearings. The mechanism is equipped with an additional vibration damper, preventing unwanted oscillations of the damper blade. Available without (CRSL) and with (CRDL) 50 mm mineral wool insulation, protected by galvanized steel sheet.
- No external power supply is required
- Easy to read flow selection scale
- Double lip seal for airtight connection