3" Circular Round Plastic HVAC Supply Grille Air Diffuser -Vent Duct Cover [Outer Dimensions: 5"] Ceiling allow you to customize airflow

allow you to customize airflow direction with ease

+ Product Details Outer dimensions: 19

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 4" duct openings

actual front end outer dimensions are 16" width X 8" height

Actual Filter Size – 13 3/4"w x 5 3/4" x 1"

3" Circular Round Plastic HVAC Supply Grille Air Diffuser -Vent Duct Cover [Outer Dimensions: 5"] Ceiling allow you to customize airflow+ Product Details Size 3" Diameter is the size for the duct opening measurement only, actual front end outer dimensions are 5" diameter. Design Made of strong durable ABS plastic, will last forever & never rust. Easy removal for cleaning. Airflow Improved airflow dynamics long neck bBody reduced noise design integrated spring fasteners. Easy Installation Just pop the diffuser right into the wall duct hole and the side springs will hold it right into