Profile: Thermax Contracting Services Limited designs, manufactures, and installs fire curtains & smoke screens. Our automatic fire curtains have been designed as an alternative to traditional steel shutters giving major advantages over the traditional steel shutters. These are designed to seal off an area to contain the fire, and prevent it from spreading into other areas. It is usually hidden within a false ceiling, only being deployed when there is a fire, or for testing purposes. Metal side guides fitted with a fabric retaining system provide a seal between the curtain and the building, and it is imperative that this seal remains in place at all times when subject to the immense positive or negative pressure created by the fire.