12V powered Vanair Roof Vent provides 100 cfm air flow. The mounting flange is corrosion resistant, chrome plated heavy gauge steel while the dome is molded from a high impact, ultra-violet stabilized plastic material in brown (Smoke). The screen, handle and garnish are Antique White. The convenient handle provides easy 1-hand opening or closing. Just push to open, pull to close. The garnish accommodates 1 1/2 - 2 1/2 in. ceiling thickness. Fits in 6 1/4 in. diameter, rough opening.