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

A home owner from Bellaire, Texas says:
January 7, 2023
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.
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A home owner from Bellaire, Texas says:
January 8, 2023
The storm door is Larson.
The dimension between screw centerlines is actually 6 7/8", not 7".
Profile picture of Tom
Tom from SWISCO responded:
January 10, 2023

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
alternate view of 40-049

alternate view of 40-049
alternate view of 40-049
A quick learner from PA says:
April 5, 2023
do you sell the 40-049 mortise only?
Profile picture of Tom
Tom from SWISCO responded:
April 6, 2023

Unfortunately, the mortise for the 40-049 handle set is not sold separately. I am very sorry for the inconvenience. 
Storm Door Mortise Latch
Storm Door Mortise Latch
40-198
$42.47
Storm Door Mortise Latch
Storm Door Mortise Latch
40-194
$42.47
Complete Mortise Lockset, Brass
Complete Mortise Lockset, Brass
40-049
$72.02
How to flip a storm door mortise latch.
How to flip a storm door mortise latch.
VIDEO
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How to install the Swisco 40-049 Mortise lock set.
How to install the Swisco 40-049 Mortise lock set.
VIDEO
WATCH >
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