07740-035 Parts

A replacement damper that helps control airflow through the hood or exhaust duct, preventing backdrafts and improving ventilation performance. Simple swap of a worn or stuck flap restores proper vent operation and airflow control. What it does:

• Seals the exhaust opening to block outside air and prevent backflow when the fan is off
• Opens freely with exhaust fan operation to allow proper ventilation
• Commonly replaces units that are stuck, bent, noisy, or no longer closing fully
• Helps reduce drafts and unwanted odors entering the home through the duct

• One damper

• Turn off power to the appliance before accessing the damper to avoid injury
• Access may require removing the hood cover or grille—use basic hand tools
• Inspect mounting screws, gaskets, and surrounding ductwork and replace any damaged hardware

This is a genuine replacement part for Broan appliances intended to restore proper function when the original component is damaged or missing. It fits the exact OEM specifications for the listed part number to help maintain safe, reliable operation. What it does:

• Replaces the original OEM component associated with part number 99420042.
• Restores the appliance to its factory configuration when the existing piece is worn, cracked, or missing.
• Helps eliminate symptoms such as unusual noises, improper operation, or loose/misaligned components when directly related to this part.
• Ensures compatibility with factory mounting points and connection methods when the correct part number is used.

• One (1) replacement Broan OEM part, PN 99420042.

• Installation may require basic hand tools; disconnect power to the appliance before beginning any work.
• Handle the part carefully to avoid damage and follow the appliance manufacturer's service instructions.
• Verify PN 99420042 matches the part called out in your model's parts list before installation.

This knockout plug seals unused openings on range hoods and ventilation assemblies to prevent drafts, grease, and debris from entering the cabinet or ductwork. It's a simple replacement part that restores a clean, finished fit. What it does:

• Caps unused vent or panel knockouts to stop air leaks and block debris
• Helps keep grease, dust, and small pests out of cabinets and ducts
• Restores a finished appearance after removing components or modifying panels
• Prevents drafts that can affect ventilation performance

• One knockout plug

• Disconnect power to the appliance before working on panels or venting
• Press-fit into the knockout opening; some models may require light tapping with a rubber mallet
• Ensure the plug seats fully and is flush with the panel for a proper seal
• Replace if cracked, warped, or damaged to maintain effective sealing