Postline ballast are made to fit inside the pole of light fixture. They are generally all HID ballasts and have a known distance to lamp measurement.
Ballasts for lighting applications are simply transformers to provide the right voltage and current mix to the gases inside the light bulb. They are commonly used in commercial applications for street lighting, wall packs and floodlights, fluorescent strip lights and recessed troffers.
Block Lighting sells a complete line of lighting ballasts for every application. Just use the drop down menus to find just the ballast for your lighting application. If you're looking for a large quantity quote just send us an email with the SKU and the total quantity... we'll have your quote in an email usually within a few hours. We're here to help!