B toifali yong’inga qarshi eshiklarning materiallari yog’och, po’lat, po’lat yog’och va boshqalarni o’z ichiga oladi. B sinfidagi yong’inga chidamli eshik eshik tanasining yong’inga chidamliligi yaxlitligi 1 soatdan oshishi kerak. Eshik ramkasi uchun 1.2 mm qalinlikdagi elektrolitik plastinka yoki galvanizli qatlam, eshik bargi uchun esa 0.8 mm qalinlikdagi elektrolitik plastinka yoki galvanizli qatlam qo’llanilishi kerak.

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metall yong’inga qarshi eshik,yong’inga qarshi eshik ishlab chiqarish, yong’inga chidamli eshik,oldindan osilgan ichki yong’in eshigi,yong’in eshigini yaqinroq, yong’inga qarshi eshik,ul yong’inga chidamli eshik,mehmonxona eshiklari qattiq yog’och kompozit yong’in eshiklari,metall yong’inga qarshi eshik,yong’inga qarshi eshiklar,oldindan osilgan ichki yong’in eshigi,yong’inga chidamli temir eshik,ul yong’inga chidamli eshik,eshik tashqarisidagi otash qudug’i,metall yong’inga qarshi eshik,eshik tijorat tashqi yong’inga chidamli temir eshiklar,ul yong’inga chidamli eshik,oldindan osilgan ichki yong’in eshigi