They are easy to install. Most (not all, believe it or not) systems have a metal bracket that forms the "spine" of the system. The bracket has two or more keyhole slots in the back. You drive two screws into whatever you are mounting the system to, and hang it up.How hard are these to install?
I always see others talking about taking from before certain filters, and using other filters for this and that and like Unresistible Blue said, removing horizontal DI and GAC after DI, and saw somewhere that suggested not getting the filter at all if it has the horizontal anythings....