Screen corners

There are markings on the inside of the pictures with a name on one and phone number. These were originally from Super seal windows. I purchased 4-95-245B 7/16" overlap screen corner, Silver Line that were recommended from the pictures before and these do not fit. They are too big . My existing corners on one side have a catch as can be seen in the last picture. This holds the screen in the channel on the side that has the tension spring that goes in the channel. The other side looks the same but does not have this catch. Dimensions are written on the pictures.