Master flow timer, standard, 115 V, 60 hz, 1 hp power, 12 hr time setting, vertical mounting, 2-1/2 in overall depth, steel, galvanized, includes: plastic knob, wall plate, for fans.
- 12-Hour – switch box – standard 
- Easily installed in standard 2-1/2 inch D vertically-installed junction box
- Spring-wound mechanical dial, open in the off position to permit Fan operation from standard pull switch when not in use