Labels:anechoic chamber | shelf OCR: Standard 500-L Louvers Louver specifications frequently reference FA and PD This does not take into consideration the key issue of volume of air passing through opening Depth of louver 15 notable issue with regard to PD deeper louver with tighter blade spacing configuration and less abrupt blade angle reduces but the trade off cost deep louver with many blades will cost more than narrower louver with fewer blades Gradual curved blades provide for lower PD than abruptly changing blades So there give- -and-take relationship between louver design, depth, performance and cost. freguently thar elationship betweer
