fire rated door house to garage,90 minute fire rated steel door,fire rated steel door lowes

Ang bilang ng mga dahon ng pinto ng apoy ay maaaring nahahati sa tatlong mga kaso: solong pinto, dobleng pinto at apat na pinto. Ayon sa Grade A steel fire door, ang oras ng paglaban sa sunog ay maaaring umabot ng 90 minuto.

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