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12 in. Width x 4 in. Height

12" X 4" Air Vent Return Grilles - Sidewall and Ceiling - Steel $8.40 USD Out of Stock
12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling $18.33 USD Out of Stock
12" x 4" Floor Register HVAC Air Supply Grille - Heavy Duty Rigid Built - Plastic Never Rust Vent Duct Cover [Outer Dimensions: 14w X 6"h] $11.90 USD Out of Stock
12" X 4" 1-Way Fixed Curved Blade Air Supply Diffuser $15.20 USD Out of Stock
12" X 4" Linear Designer Aluminum Supply Air Grille $24.69 USD Out of Stock
4" X 12" Modern Victorian Floor Register Grille With Dampers - Decorative Grate - HVAC Vent Duct Cover - Polished Brass $32.95 USD Out of Stock
12" x 4" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 14w X 6"h] $34.69 USD Out of Stock
12" X 4" 2-Way-Horizontal Fixed Curved Blade Air Supply Diffuser $13.33 USD Out of Stock