16"w X 16"h Extruded Aluminum Adjustable Surface Mount Supply Ceiling HVAC Air Grille – Interchangeable: 1-Way, 2-Way, 3-Way or 4-Way - Vent Duct Cover [Outer Dimensions: 17.125" X 17.125"] Insulated Line Set Incorporated with Integral Butterfly Damper

Incorporated with Integral Butterfly Damper for full Airflow Control

Actual Front End Outer Dimensions Are 12" Diameter

With easy installation

actual front end outer dimensions are approximately 14 5/8" width X 38 5/8" height -

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

16"w X 16"h Extruded Aluminum Adjustable Surface Mount Supply Ceiling HVAC Air Grille – Interchangeable: 1-Way, 2-Way, 3-Way or 4-Way - Vent Duct Cover [Outer Dimensions: 17.125" X 17.125"] Insulated Line Set Incorporated with Integral Butterfly Damper+ Product Details Size 16"w X 16"h Is The Size For The Duct Opening Only, Dimensions With Outer End are 17. 125" X 17. 125". Design Re configurable Interchangeable Sections Easily convertible into 1 Way, 2 Way, 3 Way, or 4 Way Just lift sections and rotate to re configure direction. High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant, beautiful, and smooth surface, adds