How to Make a Hollow Metal Frame (4 min. 43 sec.) High Def. --Explains how to make hollow metal frames and shows the complete manufacturing process.
How to Make a Hollow Metal Door (5 min. 31 sec.) High Def. -- Explains how to make a hollow metal door from start to finish. Goes throughout the manufacturing facility showing each step of the process.
Fire Rated Doors (2 min. 52 sec) High Def. -- Explains the process of making a hollow metal fire rated door. It also shows actual footage of a fire rating test.
