Appleton® explosionproof, dust-ignitionproof GUBB, GUBBD and GUBBM cast junction boxes are designed for use where the number and size of conductors require a junction box with additional space. They are ideal for use in indoor and outdoor classified locations. These corrosion-resistant junction boxes provide access for maintece. They can be used as pull boxes for pulling and splicing of wires and as an enclosure for electrical devices.