28"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 29.75"W X 19.75"H] w16h16 with no sharp edges to

with no sharp edges to worry about

Conveniently taped together as a single piece

heat pump and centralized air ducted units

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R value rating of insulation - r3

28"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 29.75"W X 19.75"H] w16h16 with no sharp edges to+ Product Details Size 28"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 75" width X 19. 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