Asico offers UL standard wood fire door with metal frame. This is one of advantages in Asico.
Asico has tested doors comply with UL10B, UL10C, ASTM, NFPA. Hollow metal door fire rating 1hour, 1.5 hour, 2 hour up to 3hour; Wood fire door fire rating 1/3 hour, 3/4 hour, 1 hour up to 1 1/2 hour. Metal frame w/ wood slab can meet your requirements on many projects like hotels, schools, hospitals, office buildings etc. See some photos on the below.