The 14×8 inch air outlet adopts standardized size specifications to meet the installation requirements of medium and large central air conditioners and fresh air systems, and realizes the uniform diffusion of hot and cold air through the precision calculation of the air channel design. Its horizontal and vertical ratio optimization can reduce turbulence interference, ensure that the air supply covers an area of 18-25㎡, and the wind speed is stably controlled in the 1.5-3.5m/s range, effectively avoiding the discomfort of direct blowing.