Relacement Door Handle

I need to replace the "CMECH" inside door handle on my EMCO storm door. The outside handle, which is round and black, is labeled "Andersen" and does not need to be replaced. The door was installed around 2001. I found some images on Google search which appear to be the same handle with the reference "Swisco.com". However, I could not find that particular handle on your website. I would appreciate your help in getting a replacement.

Thanks,
Andy