Detailed answer regarding Ceiling Fan Direction. During the summer, you want the air blowing directly on you so you will feel cooler from the wind chill effect (which is how fans cool you off). So stand under the fan and turn it up on high speed.
NRR STANDS FOR NOISE REDUCTION RATING. NRR (noise reduction rating) is a single number rating method which describes a hearing protection device (HPD) based on how much the overall noise level is reduced by the HPD. Most noise measurements in the industry are derived from the A-weighting scale.
Noise Reduction Rating â NRR. Hearing loss affects nearly one in ten Americans. This condition is usually caused by exposure to excessive noise. Shooting firearms is one of the activities that expose individuals to excessive noise. The noise levels that are produced when firearms are used can lead to permanent hearing loss. This makes it necessary to use hearing protection with good noise reduction rating.