Fits 24x6 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 25.75"W X 7.75"H (24" W x 6" H Duct Opening) actual outside dimension is 26

actual outside dimension is 26

This great product also comes with 10-year warranty for quality related issues because we are so confident about our product quality

The Listed size 12"x24" is for inside duct opening measurement

This added protection extends the lifespan of the connector while maintaining dependable performance in demanding environments

Individually packed with cardboard box for ultra protection

Fits 24x6 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 25.75"W X 7.75"H (24" W x 6" H Duct Opening) actual outside dimension is 26The Listed size 24"x6" is for inside duct opening measurement, actual outside dimension is 25. 75"x7. 75" Stamped Face Steel Construction with 1 2" fin spacing for high air flow applications. Screws are included for easy installation White Powder coating with matte finish Individually packed with cardboard box for ultra protection