OCAL™ Double-coat GUA series conduit boxes are installed in hazardous areas to protect conductors, act as pull and splice boxes, provide access to conductors for maintenance and future system changes, act as mounting outlets for fixtures (with proper covers) or change conduit direction. Grade 60-45-10 ductile iron bodies and cast aluminium covers. Nominal 0.002 inch (2 mils) blue urethane coating on both interior and exterior and nominal 0.04 inch (40 mils) PVC coating bonded to exterior. All hubs have minimum 5 full threads, integral bushing and pressure-sealing sleeves.