If you're looking for fire rated doors, put your trust in L.I. F Industries 36-in x 80-in Fire Primed Steel Commercial Door Kits that are constructed of heavy-duty, high-quality steel to provide the strength and durability needed. Featuring a 90-minute fire rating, these door kits could help save lives and protect property in the case of an emergency. The simple, flush design allows for installation in either interior or exterior walls and can be used in either masonry or drywall. Versatile for