• Material used for parts not recessed into wall: white ABS plastic. • Material used for parts recessed into wall: talc-filled black plastic (PP) giving added strength. • Nominal diameter 100 mm. • 3 speed fan through TRIO-S controller (code 12871), consisting of: • capacitor start induction motor equipped with thermal overload cutout and self-lubricating bushings, • forward centrifugal impeller.