Brown Exhaust Hood Vent 4'' Inch with Built in Pest Guard Screen and Flange, Air Cover, HVAC Duct Cap

Precise dimensions: Flange opening diameter: 3.9" inch / 99mm, Insertion height: 1.18" inch / 30mm, Outer dimensions: 6.02" x 5.83" inch / 153mm x 148mm, Screw hole spacing: 4.37" x 3.74" inch / 111mm x 95mm. Helps keep wind, rain and snow from entering outdoor dryer vents Paintable plastic components contain UV stabilizer to reduce fading due to exposure to sunlight Designed for maximum airflow - it is a great home improvement. Usable indoors and outdoors. Easy to install fresh air exhaust vent cap - grill cover