Older metal glass outside door.

Thanks for reaching out! You may be able to use the 40-049 Complete Mortise Lockset to replace your existing set but you'll need to carefully review the dimensions to be sure. The lock cylinder has a different shape from your existing cylinder but if all of the dimensions happen to be a match, there is a good chance it could work.

Look over the diagram below and see what you think.

alternate view of 40-049

Dimensions for 40-049

Alternate image for 40-049