18"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 5.75"H] Insulated Line Set High Quality – High-quality rust-free

High Quality – High-quality rust-free

+ Product Details Size - 16"w X 24"h is the size for the duct opening measurement only

Insulation density is 30kgs/cbm = 0

+ Product Details Size – 30"w X 14"h is the size for the duct opening measurement only

allowing unrestricted airflow for optimal HVAC performance

18"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 5.75"H] Insulated Line Set High Quality – High-quality rust-free+ Product Details Size 18"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 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.