What FPR filter should I use to achieve optimal efficiency in my environment? With the myriad of options available in the market, it often becomes perplexing to determine which filter truly meets my specific needs. Is it essential to consider factors such as the filtration efficiency, air flow characteristics, and energy consumption when making my choice? Furthermore, how do variations in manufacturer specifications impact the overall performance of these filters? Are there specific applications or scenarios where one type of FPR filter excels over others? Should I prioritize a higher MERV rating for better particulate capture, or is a balance between filtration capacity and airflow more critical? As I ponder these questions, I find myself grappling with terms like dust spot efficiency and average arrestance. When selecting the appropriate filtration system, how do I ensure that I am not only choosing a product that is effective but also economical in the long run?