The fire door is highly airtight, and it is impossible to leave a gap to make the air conditioner and radiator flow out as long as it is closed in time. After the fire door is installed and closed, the gap shall not be too large, otherwise the sealing performance of the fire door cannot be guaranteed, and its function of restraining fire and smoke spread cannot be reflected under fire conditions.

ZHTdoors protupožarna vrata, 31 godina iskustva u proizvodnji protupožarnih vrata i prozora. Glavna UL protupožarna vrata, EN protupožarna vrata, BS EN protupožarna vrata, itd. Imamo certifikate. ZHTdoors podržavaju OEM i besplatan dizajn. Naše prednosti: dobra kvaliteta, tvornička cijena, dobra usluga. Dobrodošli da nas konzultirate.