Metal front doors featuring with inserts of glass by "Steel Line" guarantee total security and durability. The installed three-chamber double-glazed windows with an energy saving spacer allow the doors to keep the heat inside house, while providing high level of noise insulation.

The doors use shock-proof glass covered with a protective film for safety. It can resist impacts, from which the unglazed glass would be scattered at once. The adhesive layer with tough adherence allows the safety film to adhere strongly to the glass. So, when broken, the fragments of the glass do not scatter but stay glued to the protective film.

Mirror toning applied to the glass provides the one-sided visibility effect.