20"w X 20"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: 21.125" X 21.125"] 2-Way Filter Grille features a user-friendly

Filter Grille features a user-friendly plastic latch that requires no screwdriver for opening

this 4-way air vent diffuser allows you to precisely control airflow

Actual Front End Outer Dimensions Are 11

+ Product Details Size - 22"w X 36"h X 2"d (for duct opening measurement only)

Actual Filter Size – 27 3/4"w x 9 3/4" x 1"

20"w X 20"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: 21.125" X 21.125"] 2-Way Filter Grille features a user-friendly+ Product Details Size 20"w X 20"h Is The Size For The Duct Opening Only, Dimensions With Outer End are 21. 125" X 21. 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