Screen corners

I am trying to find a plastic corner for a screen. You have a screen corner #95-0206 I am looking for about 6 pair of these. These corners are generally for the top of the screen and they hold the lip frame in at the top. There is another corner that is the same for the bottom except it does not have the "tab" that holds it in place. Do you carry this corner as well? What is the cost and how is it sold?