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Energy Efficient Doors

Dongbang Zenith GN "You can be free from worry about energy."

DongBang Zenith Green is high air tightness insulation door which obtained certification of high efficiency equipment, designed by scientific structure.


  • You can choose product according to its use among 9 certified products which have function of fire prevention and preventing condensation, etc.
  • All products have high air tightness by using sponge gasket for fire prevention and they are equipped with fire preventing function. (Applied to all of DongBang novoferm products)

Insulation 1.24W/m²K, Air tightness 0.48m3/h.m2 , Fire Rating 1hr, Preventing condensation -15°C