Reagle Smart Lock fits most standard single-cylinder deadbolt doors that range from 1-3/8"  to 2" (35mm to 51mm) thick.

Supported backsets (the distance from the edge of the door to center of the bore hole for the lockset) are 2-3/8" or 2-3/4" (60mm or 70mm).

The figures below illustrate the combination of Reagle smart lock and your existing door handle.