The classic Hadley Rectangular Bell is the most widely recognized truck air horn in the world. Made famous as original equipment on over the road trucks, heavy duty RV, and specialty vehicles. The Hadley Rectangular Bell horn is a heavy duty beauty that is the standard of its industry.

Whether as a single unit or as a set, the Hadley Rectangular Bell horn offers the traditional "Hadley Sound", a crystal clear, characeristic note that can be heard for up to a mile. This hallmark sound comes from the exclusive sound chamber and the use of a stainless steel diaphragm.

As with all Hadley horns, do-it yourself kits are available for Rectangular Bell Horns which include everything needed to mount the system; horns, compressor, hoses, and 7/16" 24 thread air port fittings with complete installation instructions

Included in each kit:

• Chrome or Aluminum Horn (depending on part number)
• Pedestal support and gaskets