This key is for Larson Doors only that have a key that is coded 226. This is a second version found in the field. If you have your key it should match the picture below. Your lock will not have a code on it and if the key is lost, we would suggest using a core/key replacement that we offer. This is used on many of the common lever handle door handles. Please see 2029780003 LARSON KEYLOCK ASSEMBLY
This is what the original key looks like so you can compare-
