color looks off white 

I would say its ivory color 

The Genuine Whisper Control Bath light Fan Control Condensation Sensor FV-WCCS1-W is a white rectangular electric fan designed for indoor use in bathrooms. Manufactured by Panasonic in 2011, this plastic fan features a timer and operates on a wall-mounted infrared control style. With a single speed setting at 120V, this fan is an essential addition for maintaining optimal indoor air quality and comfort in your home.

color looks off white 

I would say its ivory color

on top of steel rack window