DuPont WFPF38001C Universal Valve-in-Head Whole House Water Filtration System,blue

Will this decrease my water pressure in the house?

Are the port 3/4 NPT on this model?

So that nice that it treats 15,000 gallon but what is the micon size of the 1 filter that comes with it? Can it be changed from 20 micons to 5 ?

Does this include the mounting bracket and wrench etc like the non clear, non valve-in-head style does?