Please fill out and submit this form and we will e-mail you advice on choosing the correct lock for your door. If you are unfamiliar with door and lock terminology the "glossary of terms" page should help you. Before you start filling out this form, print out the "dimension worksheet" page of this website and fill it in with the requested measurements taken directly from the door(s) you are buying hardware for. Make sure you take accurate measurements! When dealing with door hardware an 1/8" can make all the difference in the world. Take your time, be accurate and we'll make sure you get the right lock the very first time!