Duravent 03SC B-vent Storm Collar 3 Inches

Product Description

The DURAVENT 03SC is an adjustable storm collar designed for use with 3-inch B-vent pipe at roof penetrations. This flashing accessory seals around the exterior of the vent pipe above the roof flashing, creating a weather-resistant barrier that blocks wind-driven rain and debris from entering the opening around the pipe. It is used in Category I natural-draft gas appliance venting systems and is installed by licensed HVAC technicians or qualified mechanical contractors during new installations or service calls requiring roof-level vent maintenance.

This storm collar is suited for residential and light commercial applications where a 3-inch B-vent pipe passes through a sloped or flat roof assembly. The adjustable design allows the collar to conform to varying roof pitch angles without requiring a pitch-specific part, making it a practical stock item for service vehicles. It seats above the roof flashing to complete the weatherproofing detail at the vent termination point.

Key Features

• Fits 3-inch B-vent pipe for a secure, properly sized seal
• Adjustable collar accommodates varying roof pitch angles
• Weather-resistant construction blocks water intrusion at roof penetrations
• Designed for Category I gas appliance venting systems
• Installs above existing roof flashing to complete the vent weatherproofing detail

Compatibility

Designed as an OEM-style replacement and new-installation storm collar for 3-inch B-vent pipe systems used in Category I gas appliance venting applications.

Installation Notes

Installation is typically performed by a licensed HVAC technician or qualified mechanical contractor familiar with gas appliance venting requirements. Shut down the appliance and allow the vent pipe to cool before working at the roof penetration. The collar should be positioned above the roof flashing and secured according to the manufacturer's instructions and applicable local mechanical codes. Seal the collar perimeter with an appropriate roofing sealant rated for the expected temperature exposure at the vent location.

Technical Specifications

• Pipe Size: 3 inches
• Type: Adjustable Storm Collar
• Application: Category I Gas Appliance B-Vent Systems

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 03SC