All standard doors are manufactured from stretcher level quality, cold rolled steel. The Honeycomb Paper and Polyurethane Adhesive are insures a continuous bond for metal skin. The Honeycomb Paper and Polyurethane Adhesive also provide good sound deadening qualities and low thermal conductivity. And also it can be available for Rockwool insulation + fabricated of channel reinforced sheet steel to obtain a higher fire rating integrity substance.
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