Ventline (VA0445-25 Birch White Plastic Ceiling Garnish Ventline Ventadome Birch White Plastic Ceiling Garnish for 14.25 Inch x 14.25 Inch radius corner roof Ventadomes Note: Roof thickness shown is for non-powered and 12-volt installation; for 110-volt, add 1/4 Inch to roof thickness sizes 1.13 Inch Leg Length, for 7/8 Inch to 2 Inch roof thickness