This universal speaker mount with 100w speaker is perfect for mounting the siren speaker under the hood or in the grille. The bracket is available in tall, short, hood/grille, or universal styles. These easy to install speakers are highly efficient for their size. With the use of a Low Frequency Amplifier these speakers can also be used for low frequencies. The brackets are made from cast aluminum. The driver on the speaker has a 5 year manufacturer warranty and meets SAE J1849 and California Title 13 requirements when used with Code 3 sirens.