It is usable indoors and outdoors. Very easy to install fresh air exhaust vent cap - grill cover size is standard 190x190cm (7.5 Inch x 7.5 Inch)
Paintable plastic components contains UV stabilizer to reduce fading due to exposure to sunlight
Helps to keep wind, rain and snow from entering outdoor dryer vents
It is designed for maximum airflow it is a great home improvement
The size of the hole is 5,7 and it fits a standard 6-inch pipe diameter / vent opening // The outside dimensions of the cap cover plate is 7.5 x 7.5 Inch
White Exhaust Hood Vent 6 Inch With Built-In Pest Guard Screen And White Air Vent Cover Hvac Exhaust Vent Duct Cover Exhaust Cap