10" x 4" Floor Register HVAC Air Supply Grille - Heavy Duty Rigid Built - Plastic Never Rust Vent Duct Cover [Outer Dimensions: 12w X 6"h] Insulated Line const dd = dt

const dd = dt

actual front end outer dimensions are approximately 21

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10" x 4" Floor Register HVAC Air Supply Grille - Heavy Duty Rigid Built - Plastic Never Rust Vent Duct Cover [Outer Dimensions: 12w X 6"h] Insulated Line const dd = dt10"w X 4"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 12" Width X 6" Height SEE IN DESCRIPTION HOW TO MEASURE A GRILLE Solid Construction Designed For Floor Use High Quality ABS Plastic Will Last Forever & NEVER RUST Foot Operated Opposed Blade Damper For Full Air Flow Control And Shutoff Multi Angled Fan Pattern Fins For Multi Directional AIr Distribution Throughout The Entire Room 10" x 4" Floor Register