This hair catcher is flat, not convex like my previous one, so depending on how your regular drain cover sits, you may need to remove it to get this to sit nicely. I did so and the catcher sits basically flush with the shower pan, which is perfect.

Drain use can vary so take my opinion with a grain of salt. 1 star for the quality being good quality. Seems well made though haven't used it long term, so don't know it will rust, though it shouldn't. If comparing to brand name version, I don't believe quality of materials would be different, though engineering/ design may be the difference, if there is one. It does not stay in place to cover my drain. It is constantly sliding around. Does not catch hair. You can visibly see the hair slide underneath while showering. I regret this purchase and am disappointed to be out the cost of the item. Definitely not the best choose for all circumstances.