6"W X 22"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 7.75"W X 23.75"H] Supply Grille actual front end outer dimensions

actual front end outer dimensions are approximately 10 5/8" width X 12 5/8" height

+ Product Details Size – 28" x 30 or 30" x 28" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 32 5/8" height -

Horizontal performance assures confident use of cooling temperature differential of 30 degrees Fahrenheit and greater

+ Product Details Size – 18" Wooden Corner Baseboard Grille

6"W X 22"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 7.75"W X 23.75"H] Supply Grille actual front end outer dimensions+ Product Details Size 6"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 23. 75" height. Design Easy unrestricted airflow for your HVAC system 50 angled to provide maximum airflow. High Quality Solid stamped steel with counter sunk screw holes (screws included) and no sharp edges. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just waxed.