(6 3/8″ between mounting holes) Here’s a NeonTech 6000 transformer for that beer sign that quit working. This self-regulating solid state transformer handles 2K to 6K. Built in dimmer. Excellent condition! These units were originally used for dual unit signs and don’t have a full power cord from the factory. I will include a new power cord to complete your installation. Also, they won’t have a pull chain for operation. 1 available.