Which products fit? Maybe 40-198 or 40-194?

Question

I want to replace a mortise latch that has a return spring that is not functioning. The 40-198 and 40-194 look hopeful, but I ask for your help.
Will one of these models fit?
What do you make that will fit?

One photo shows the door frame/ strike plate/ cutouts for deadbolt and latch. Another photo shows dimensions for this.

Three photos show the old mortise latch and its dimensions.

Tom · Accepted Answer

Neither the 40-194 nor the 40-198 will work in your application. I believe the best option we have for this old Larson storm door set is our 40-049, but review its specs and see what you think.

alternate view of 40-049