About This
- Size – 18″w X 4″h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19.875″ width X 6″ height
- High Quality High quality steel construction, no scuff powder coat durable finish, smooth, shiny, scratch-resistant, no sharp edges, 2 recessed screw holes on each side with screws included, screws same color as vent cover, easy installation
- Adjustable airflow control Adjustable airflow control: The system allows users to customize the amount of air supply, providing the flexibility to match specific ventilation requirements or personal comfort levels
- Full Control Full 190 degrees control of air direction vertically & horizontally
- Quality Packaging Carefully shrink wrapped with cardboard backing to prevent damage in shipment
- Air Flow Ensure a quiet and smooth HVAC system with noise-free components, easy unrestricted airflow, and a control lever designed for seamless operation
- Powder-Coat Finish Smooth, shiny, scratch-resistant, beautiful. Looks like it was just waxed
![18 X 4 Adjustable AIR Supply Diffuser – HVAC Vent Cover Sidewall or Ceiling – Grille Register – High Airflow – White [Outer Dimensions: 19.75w X 5.75h]](https://www.householdgoodsdepot.com/wp-content/uploads/2026/10/18-x-4-adjustable-air-supply-diffuser-hvac-vent-cover-sidewall-or-ceiling-grille.webp)









