Home / Products / 10″ Air Horn SKU: 2018 Categories: Exterior & Chassis, Uncategorized Tag: Ambulance Parts Description Description Brass, chrome-plated, Frequency: 493 Hz Related products Whelen 50W Clear Halogen Bulb H50SN12 View Part Whelen Siren Speaker SA315P View Part Hanscom K Backup Camera (Monitor & Bracket) View Part Whelen 900 LED Scene Light 24 Pin 9SC0ENZR View Part