Works on most, but not all, horizontally aligned swinging or folding fireplace door handles.;Fireplace door handles must be between 6 and 9 apart. One bar is 24.5 long, the other is 14.25 long.;Fireplace door handles must have a gap to allow for installation.;Lock must be completely uninstalled to access fireplace.;Hardware included.
Fireplace Door Lock by Safety Innovations - B007IUP3NY