40"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 41.75"W X 21.75"H] w18h18 creating a quiet and efficient LO246 Product Details Size 32 Compatible with Duct 4"

creating a quiet and efficient environment

+ Product Details Size - 36"w X 10"h is the size for the duct opening measurement only

Red Oak Wood – A true decour upgrade to you HVAC application - adds a touch of warmth & softness to the room

+ Product Details Size - 24"w X 22"h is the size for the duct opening measurement only

40"W X 20"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 41.75"W X 21.75"H] w18h18 creating a quiet and efficient LO246 Product Details Size 32 Compatible with Duct 4" creating a quiet and efficient environment + Product Details Size 36"w X 10"h is the size for the duct opening measurement only