Protupožarna vrata koja obično nazivamo su toplinsko izolacijska protupožarna vrata (tj. protupožarna vrata klase A), koja mogu zadovoljiti zahtjeve protupožarne cjelovitosti i toplinske izolacije u isto vrijeme u navedenom vremenu. Protupožarna vrata s ocjenom vatrootpornosti ne manjom od 1.5h.

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