Whether your doorway is made of wood or metal, rated 20 minutes or 3 hours, there is a Soss fire rated hinge that will comply and still give you the invisible look you expect from Soss.
Good to deal with. Prompt delivery.
It was great. Found exact part, reasonable price, and it arrived so promptly-exactly as stated. Wish every place was this easy to order from!
Very easy to research and order items.