Product review (4 stars): F
okay, nothing much to say here.  Its a furnace water filter and it fits our furnace.  Keep them replaced and don't let the gunk build up.  only replace this screen and not the black plastic frame. it simply slides into the frame.  Soft water is deceiving making you think it is fine after 6 mos. only to have it crumble to the touch.  set up a reminder.  Okay, I guess I