The glass-fibre-reinforced polyester used in the manufacture of the HTBP series junction boxes has been selected to ensure maximum protection against corrosive agents and UV radiation. The cover screws are made of AISI 316L stainless steel. The cover is fitted with a silicone gasket. The internal mounting screws are made of a corrosion-resistant material. A wide range of enclosure sizes is available to meet all customer requirements.