20"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 19.75"H] Filter Grille Traditional HVAC systems were designed

Traditional HVAC systems were designed for cold air

Elevate your living space with this sophisticated addition

With precise measurements and easy installation

Our coils have a a very high PSI burst pressure

Easy Unrestricted Air Flow For Your HVAC System

20"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 19.75"H] Filter Grille Traditional HVAC systems were designed+ Product Details Size 20"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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