Am redoing my screens. Do you have these corner pieces? Each screen has 2 like these 2 with the plastic pulls attached but was unable to get them off. Your having them will determine how hard I am willing to work to get them off and replace. They do not all need replacing, but several do. They are 1 and 7/8" x 1 and 7/8" x 1/4". The manufacturer went out of business many years ago.
Thank you,
Kim