12"W X 34"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 35.75"H] Aluminum - Cube Core R value rating of insulation

R value rating of insulation - r3

5" - SEE BELOW IN DESCRIPTION How To Measure A Grille

+ Product Details Size – 12"w X 6"h is the size for the duct opening measurement only

85" width X 19

12"W X 34"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 35.75"H] Aluminum - Cube Core R value rating of insulation+ Product Details Size 12"w X 34"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 35. 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