This replaced a mouse-occupied original. The unit itself is solid, no cracks or other surprises. The instructions for how the different internal components fit together are pretty abysmal so save your old one for reference. I didn't have the old one and ended up needing to look online for the exact orientation of some parts. I also had some fitment issues with it aligning with the fresh-air intake that required a little modifications. Good replacement but looses some points on precision and documentation