Duravent 04SC B-vent Storm Collar 4 Inches Adjustable

Product Description

The DURAVENT 04SC is an adjustable storm collar designed for use with 4-inch B-vent pipe systems. This flashing accessory seats above the roof flashing at the vent pipe penetration point, creating a weather-resistant seal that blocks wind-driven rain and moisture from entering the structure. It is a standard component in Category I gas appliance venting installations and is typically installed by licensed HVAC technicians or qualified plumbers working on natural gas or propane appliance venting systems. The adjustable design accommodates slight variations in pipe positioning and roof pitch.

This storm collar is used at roof penetrations in residential venting installations serving Category I gas appliances such as natural draft furnaces, water heaters, and boilers vented through B-vent pipe systems. It is installed after the vent pipe has been run through the roof flashing, seating snugly against the pipe to complete the weatherproofing at the roof line.

Key Features

• Fits 4-inch B-vent pipe for a secure, properly sized seal
• Adjustable collar design accommodates minor pipe offset and varying roof conditions
• Weather-resistant construction prevents water intrusion at roof penetrations
• Designed for Category I gas appliance venting systems
• Installs above roof flashing to complete the vent termination assembly

Compatibility

Designed as an OEM-style replacement and standard component for 4-inch B-vent pipe systems used in Category I gas appliance venting installations.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified contractor in accordance with the appliance manufacturer instructions and applicable local codes including the International Fuel Gas Code. Shut down the gas appliance and allow the vent system to cool before working on roof penetration components. The collar should be slid down over the vent pipe and seated flush against the roof flashing before securing, ensuring no gaps are present that could allow water infiltration.

Technical Specifications

• Pipe Diameter: 4 inches
• Vent Type: B-Vent
• Adjustable: Yes

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 04SC