30"W X 10"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 11.75"H] Color_Red Oak Wood Insulation density is 30kgs/cbm =

Insulation density is 30kgs/cbm = 0

but you will appreciate the benefits over the period of time

12"w X 4"h Is The Size For The Duct Opening Measurement Only

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

30"W X 10"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 11.75"H] Color_Red Oak Wood Insulation density is 30kgs/cbm =+ Product Details Size 30"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 75" width X 11. 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