The GELCO projector lamp has a T4 bulb shape and a GY9.5 base. It operates at 150 watts and 24 volts and has an average life rating of 100 hours. The ANSI coded DZE projector lamp can be substituted with the FDS lamp. The burn is within 45 degrees of vertical base-down. The ANSI code is DZE/24V/150W.