Grade A fire-resistant door,耐火limit1.5Hour

Grade B fire-resistant door, fire resistance limit1.0hour

Grade C fire-resistant door,耐火limit0.5hour

Fire-resistant doors actually come in various types, such as wooden, glass, and steel ones, categorized by materials.; By usage function:Access control fire doors, entryway fire doors, interior fire doors, explosion-proof fire doors, quick-lock fire doors, fire doors with quick opening in case of fire, multi-functional fire doors, etc.;

By technology:Electronic fire doors and more;

By door closer installation location:Exterior fire doors and interior fire doors;