For added security, more insulation value, or just because you like the look, a steel door is the same door you would buy for your house... and this one provides plenty of light! Our 15 lite door uses one piece of tough double pane tempered glass with plastic muntins to make it look like 15 individual panes. Measuring 72” high and 36” wide, this steel door features three standard house door hinges as well as a locking door knob with key.