Product Name: Cosmo Series Wide 21 Recessed Electronic Toilet Ventilation Switch (Lighting & Ventilation Fan Interlock Type) (Ventilation Fan Delay Off: 0 - Approx. 5 Minutes Adjustable) (White) Part Number: WTC5383W 1 piece Opened Please refrain from questions such as "Can this be used for ○○?" Individual sales and bulk sales are possible. Only those who understand, please!