16"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 17.75"W X 31.75"H] w16h16 Insulation – A thick blanket

Insulation – A thick blanket of fiberglass insulation provides you with an R-Value of 8

With precise measurements and easy installation

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4" X 10" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

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16"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 17.75"W X 31.75"H] w16h16 Insulation – A thick blanket+ Product Details Size 16"w X 30"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 31. 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