What is the minimum distance a vent hood must be located below windows, according to safety recommendations?

The minimum distance a vent hood must be located below windows is four feet according to safety recommendations. This requirement is in place to prevent the possibility of exhaust gases being drawn back into the building through open windows. By maintaining a distance of four feet, it reduces the likelihood of cross-contamination and ensures that any potentially harmful gases, such as carbon monoxide or other combustion byproducts, are dispersed safely away from living spaces. This practice is crucial in ensuring the safety and comfort of occupants, as well as maintaining good indoor air quality. Additionally, the four-foot guideline is a standard that has been adopted in many building codes to provide a buffer that enhances safety in homes and other structures.