A solution for treating a surface of an iron material includes zirconium fluoride; ion of a rare earth element andor a compound containing a rare earth element; a polyallylamine; aluminum ion; and free fluorine ion. The enclosure further includes opposing side openings separated by a width of the enclosure, each of the side openings being adapted for receiving a side panel. Interpolation errors are also calculated for the current missing green pixel in a North-South direction at known neighboring green pixels, and the NS interpolation errors are averaged to obtain a NS error. By varying the detune frequency of probe field and Rabi frequency of control field, its band gap structure can be adjusted. An adjustment ring has a first configuration that centers the lockset in a door having a first standard thickness and a second configuration that centers the lockset in a door having a second standard thickness.