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 9 lite door uses one piece of tough double pane tempered glass with plastic muntins to make it look like 9 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.