DRTS 218 Explosionproof Luminaire 2x18w Housing Copper - free aluminium alloy , coated with epoxy-polyester powder Reflector High grade aluminium anodized reflector Diffuser Heavy-duty borosilicate glass tubes Lamp Holder Fluorescent 18/20w or 36/40 , G13 Socket IP Rating IP67 Installation For pendant or surface mounting Application Suitable forinstallation in the hazardous area such as petrochemical plants , paint manufacturing plants , flour mills , or oil refineries.