Andersen Mortise Lock 2573558

Thanks for posting. Without a picture of your original Andersen mortise I can't say for certain which one you need, but take a look at our 82-037. Compare the specifications to your old part and see if you think this is the one you're looking for.

Thanks for the photo. Yes, the 82-037 looks to be a modern version of your old lock. It comes with a receiver kit. You can order the 82-037 from its product page. Simply click "Add to Cart," and then click "Checkout" at the top right hand corner of the screen. Don't forget to set the quantity!