Identify a common type of sprinkler head used in storage areas.

Early suppression fast response (ESFR) heads are specifically designed for high-piled storage areas and are crucial for protecting environments where combustible materials are stored. These sprinkler heads operate at a faster response time, allowing them to release water quickly in the event of a fire, which helps to control or extinguish the fire before it has a chance to spread.

The design of ESFR heads enables them to project water over larger areas and higher ceilings, making them particularly effective for protecting large warehouse spaces. Their quick activation can significantly reduce the heat released from a fire, which is essential in minimizing damage and loss of inventory.

In contrast, conventional heads are typically used in more standard applications where the fire load is not as high. Dry pipe heads are utilized in environments where temperatures can drop below freezing, but they are not primarily focused on high storage scenarios. Horizontal sidewall heads find their application in areas where ceiling obstructions exist, making them unsuitable for high-piled storage arrangements. Thus, the unique features of ESFR heads make them the ideal choice for such specific fire protection needs.