Flush Type Fire Rated Interior Door

Are they made of solid steel? No. Steel doors are comprised of either a polyurethane or polystyrene core with a steel skin over the top. A solid steel door would be prohibitively heavy and would most likely tear out the hinges. Steel between 16 and 24 gauge is used for the skin of the door....

Are they made of solid steel?

No. Steel doors are comprised of either a polyurethane or polystyrene core with a steel skin over the top.

A solid steel door would be prohibitively heavy and would most likely tear out the hinges. Steel between 16 and 24 gauge is used for the skin of the door. Also, a wood frame, called a stile, surrounds the perimeter of the door. So, none of the polyurethane or polystyrenes is visible on the edges of the door.


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