34"W X 14"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 35.75"W X 15.75"H] Color_White + Product Details Size - w34h34 Product Description Introducing our LO612

+ Product Details Size - 16"w X 25"h is the size for the duct opening measurement only

Our innovative adjustable design changes the game

actual front end outer dimensions are approximately 12 5/8" width X 12 5/8" height

+ Product Details Size - 10"w X 32"h is the size for the duct opening measurement only

The first number in a grille size represents the width

34"W X 14"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 35.75"W X 15.75"H] Color_White + Product Details Size w34h34 Product Description Introducing our LO612 + Product Details Size 16"w X 25"h is the size for the duct opening measurement only Our innovative adjustable design changes the game