For what its worth! My 2006 HR Neptune XL coach had this cage on when I purchased it used back in 2011 and took it off as it was bent. I recently replaced my engine serpentine belt and discovered all kinds of trash all embedded in the radiator and at the bottom of the shroud, specifically shredded plastic grocery bags and sand/pebbles. I vacuumed it all out and now realize why it was installed from new.