Nu-Tone Model HD50 Heavy Duty Bath Fan-  50 CFM, 1.5 Sones, 4" ducting.

These products are named Heavy Duty for good reason. They're built tough to last in those punishing applications that are just too much for typical residential products. And a broad spectrum of AMCA and HVI certified performance ratings means there's an HD Series Fan or Fan/Light that's just right for your next light-commercial or institutional application. Restaurants. Office buildings. Care facilities. Convenience stores. Bars. Gas Stations. Anywhere you need rugged, reliable performance.

DESCRIPTION:

.  50 CFM 1.5 Sones. (HVI)
.  Totally enclosed motor designed for continuous operation.
.  Rugged metal fan grille for added durability, easier cleaning.
.  Grille torsion spring-mounted for easy installation.
.  Pre-wired outlet box for plug-in motor plate.
.  AMCA licensed for both air and sound.
.  UL Listed for use over bathtubs or showers when connected to GFCI-protected branch circuit.

DESIGN FEATURES:
Air Delivery: 50 CFM at 0.10" S.P.
Sound Level: 1.5 Sones.
Dimensions: Housing: 8" long x 8-1/4" wide x 5-3/4" high.
Grille: 10-1/4" Square
Material & Finish: Housing: 26 gauge galvanized steel.
Grille: metal grille finished with white acrylic paint
Motor: Shaded pole, thermally protected,
120vAC, 60 Hz, .4 amp, 30 Watts
Duct Size: 4" diameter.