THIS IS A 1957 CHEVROLET (ALL MODELS) HEATER BLOWER MOTOR AIR DUCT HOSE FOR A DELUXE HEATER. THIS IS THE HOSE THAT CONNECTS THE BLOWER MOTOR TO THE INNER FENDER AIR DUCT. THIS IS THE CORRECT CLOTH STYLE, NOT THE CHEAP RUBBER KIND. THIS IS AMERICAN MADE. THE DIMENSIONS ARE: LENGTH 7 INCHES, DIAMETER 4 1/2 INCHES, CIRCUMFERENCE 14 3/4 INCHES. SKU #4735