Need locking mechanism

Hi Tony, thank you for posting,

Please start by reviewing the style and dimensions of the 82-080 handle set as a possible replacement option. This handle set has a 4-15/16" installation hole spacing from center to center. 

Dimensions for 82-080

We do not have this exact internal mortise lock, but it reminds me of the 82-268B style. Take a look at the overall dimensions to see what you think! This lock is compatible with the 89-042 strike plate and 89-043 cover. If there is any uncertainty that this style will work, please see our return policy here. 

Dimensions for 82-268B