72R4010 defrost duct is designed to channel heated airflow from the HVAC system to windshield defrost outlets in heavy-duty truck cabs and commercial vehicles. Built with an integrated 2-1/2″ hose adapter, this duct supports secure hose connections and consistent airflow delivery.
With an overall length of 20-1/4 inches, the duct is shaped to fit within tight dash and cab spaces while maintaining smooth airflow transition. Its rigid construction ensures durability and reliable performance in demanding operating environments, making it suitable for both OEM installations and service replacements.
Manufactured to OEM-grade standards and sourced from trusted industry suppliers, this defrost duct delivers dependable airflow routing and long service life.
Product Specifications
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Product Type: Defrost Duct
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Reference Part Number: 72R4010
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Manufacturer Catalog No.: RD-5-9152-0P
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Length: 20-1/4″
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Width: 2-1/2″
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Height: 3-3/8″
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Hose Adapter Size: 2-1/2″
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Application: Cab HVAC defrost airflow routing, windshield defrost ducts
Cross-Reference Numbers
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Freightliner: RDH RD5 9152 0
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Mack: 4379-RD591520
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Volvo: RDHRD591520P
Interchange Numbers
232-8649, 244-0803, 4379-RD591520, 4379-RD591520P, 700-6155, 72R4010, ABP N83 317059, RDH RD5 9152 0, RDHRD591520P, RDT72R4010
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