Photo 1 of HVAC Premium 10''w x 4''h Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 11.75''w X 5.75''h]

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Photo 1 of HVAC Premium 10''w x 4''h Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 11.75''w X 5.75''h]Photo 2 of HVAC Premium 10''w x 4''h Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 11.75''w X 5.75''h]