Maryland Code, Public Safety § 12-401

(1) is beside an entrance or exit door;

(2) has a glazing less than 18 inches from the finished floor or the least dimension of which is 18 inches or more; and

(3) may be mistaken as a means of egress or ingress.

(e)(1) “Hazardous location” means a place for a door, panel, enclosure, or other element, that is glazed or to be glazed, in a residential, industrial, commercial, institutional, or public building where the use of material other than safety glazing material constitutes an unreasonable hazard.

(2) “Hazardous location” includes a place for a framed or unframed exit door, a storm door except an operating vent on a jalousie door, a fixed or moving sliding door, a shower door, a tub enclosure, a fixed glazed panel immediately adjacent to an entrance or exit door, and any other element, that is glazed or to be glazed, whether or not the glazing is transparent.

(f)(1) “Safety glazing material” means glazing material that:

(2) “Safety glazing material” includes tempered glass, laminated glass, wire glass, or rigid plastic.