Unknown Patio Screen door Manufactured or model.

The part I need is on picture (0590). The white plastic handle in this picture is on the inside of the screen door but exposed the the weather and after 12 years it was so brittle it broke into. The metal latch with the spring is 1&5/16" long, 1&9/16" high. The plastic handle was mounted with a rivit. I only part I need is the plastic handle.

The other 3 pictures (0599),(0600) & (0601) are the outside & inside medal handles and opening of where on the end of the door.

I hope this site can assist me in finding this part. Thanks for any assistance.