The 16' X 6' Supply Grill With Damper (with Neck) delivers reliable, consistent performance as a air grille and diffuser product suited to distributing and directing airflow in ducted ventilation systems. Designed with reliability in mind, it installs easily and performs consistently in both residential and commercial settings. Quality-checked for dependable performance, it offers excellent value without compromising on reliability. Whether you are an HVAC technician, contractor, or hands-on homeowner, this air grille and diffuser product is an essential addition to your ducting and ventilation supplies. Order today and keep your air-conditioning or refrigeration system running at its best.