What color code in glass bulb colors indicates intermediate temperature classification for sprinkler heads?

The correct choice indicates the intermediate temperature classification for sprinkler heads. In the context of sprinkler systems, glass bulbs are used in automatic sprinkler heads, and their colors correspond to different temperature ratings. The intermediate temperature classification, which typically ranges around 135°F to 170°F, is represented by white frame arms or a combination of yellow and a green liquid within the glass bulb.

This classification is essential because it determines when the sprinkler will activate in the event of a fire, impacting the safety and effectiveness of the fire suppression system. Each color associated with the sprinkler heads is standardized and provides critical information to technicians regarding the activation temperature, ensuring that systems are installed correctly according to the required specifications of a particular environment or building type.