18" X 18" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 19.75 X 19.75] Ceiling A unique combination of cotton 4 X 12 Is CRFG2028 Width_14in

A unique combination of cotton & synthetic fibers gives you the most filtration and the least air resistance - equals great air & easy airflow for your system

+ Product Description This aluminum flex duct is intended to be used in heating

+ Product Description Introducing our 4" x 12" or 12" x 4" Floor Grille - a reliable and durable air grill designed for exceptional performance and built to last

This is an individual piece to customize your HVAC line set cover unit that can be used in both home and commercial settings

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

18" X 18" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 19.75 X 19.75] Ceiling A unique combination of cotton 4 X 12 Is CRFG2028 Width_14in A unique combination of cotton & synthetic fibers gives you the most filtration and the least air resistance equals great air & easy airflow for your system + Product Description This aluminum flex duct is intended to be used in heating