UL Fire Steel Door 45, 60, 90 Minutes UL Certificated Steel Fire Door Russian EI 60 CertificateSpecification:1. UL Certificate, EI60 Certificatte, EN 1634-1:20092. Fire rated time: 45, 60, 90 minutes3. Door panel thickness: 52mm4. Material: Panel: GI steel, 1.0mm Frame: GI steel, 1.5mm5. Filling material: Ceramic Fiber Board6. Finish: Powder Coating7. Standard Color: RAL1015, RAL1018, RAL1020, ...