New Key and Key Lock

Home Owner from Ft Myers, FL
Jul 28, 2023 2:03 pm
36" by 80" storm security door and I need a replacement key or a new lock?
The top says MTS USA and the numbers on the bottom are 323.
storm door lock replacement
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Casey from SWISCO
Jul 31, 2023 12:54 pm


I'm not sure if we carry a suitable replacement for your thumbturn but we've related the three replacements that we carry on this page for you to review. In cases like yours, I would generally recommend starting by comparing the specifications of the 40-049 lockset to yours. This isn't exactly the same as your original, at least not in terms of style, but the design is very similar. I think it may work as long as the dimensions match up to yours. If so, replacing the entire assembly can be a safer bet since you know that all of the hardware will be compatible with each other. Take a look and see what you think. 

alternate view of 40-049
alternate view of 40-049

Dimensions for 40-049
Dimensions for 40-049

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