28"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 29.75"W X 5.75"H] w26h26 Both lines taped together every

Both lines taped together every 18in for easier handling & installation

All of these grills have dampers

positioning supply and return grills accordingly

Conveniently taped together as a single piece

75" width X 25

28"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 29.75"W X 5.75"H] w26h26 Both lines taped together every+ Product Details Size 28"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 75" width X 5. 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.