storm door mortise

A handy person from Moscow Mills MO says:
The spring within the mortise has worn out, so I guess I need a completely new housing to slide into the door. This is for a Larson storm door with retractable glass/screen panel.
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Bob from SWISCO responded:

Check out our 40-198 Storm Door Latch. Look over the dimensions listed and let me know if this matches what you need. 

A handy person from Moscow Mills MO says:
Thanks, Bob. I actually have that part. I ordered it from SWISCO last week, in fact. Now I need handles to go with it. The existing handles have a hexagonal shape, as you can see, and I need square to fit the part.
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Tom from SWISCO responded:

Hey there! Bob's not in today but hopefully I can help.

Now, there's no one specific handle set to go with the 40-198, but I find that the 40-199 works perfectly well. I'm just not sure how well it matches up to your old handle, in terms of how it mounts to the door. You may end up having to drill new installation holes for it. Just something to consider.

How to flip a storm door mortise latch.
How to flip a storm door mortise latch.
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