Hart Cooley 12r45 B-vent 45-degree Elbow 12 Inches

Product Description

The HART COOLEY 12r45 is a 12-inch double-wall round B-vent 45-degree elbow designed for natural gas and propane appliance venting systems. This fitting redirects vent pipe runs at a 45-degree angle, allowing installers to navigate framing, structural obstacles, or offset flue paths within Type B vent assemblies. The double-wall construction maintains the required air space between the inner and outer walls, supporting proper draft and reducing heat transfer to combustibles. Licensed HVAC technicians and gas appliance installers use this elbow when configuring venting for furnaces, boilers, water heaters, and similar gas-fired equipment.

This elbow is suited for residential and light commercial applications where Type B double-wall vent pipe is specified. It fits into standard B-vent system assemblies, typically run through interior wall chases, floor joist bays, or attic spaces. The 12-inch diameter accommodates higher-capacity appliance venting where larger flue sizes are required by equipment manufacturer specifications or local code calculations. It is installed as part of a continuous B-vent system from the appliance draft hood to the vent termination.

Key Features

• 45-degree elbow angle for routing vent runs around obstructions
• 12-inch diameter suits high-capacity gas appliance venting
• Double-wall round construction maintains required air gap
• Standard flat profile fits typical B-vent system configurations
• Weighs 4.2 pounds for manageable single-technician handling during installation

Compatibility

Designed as an OEM-style replacement and standard component for Type B double-wall round vent pipe systems in residential and light commercial gas appliance venting applications.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified gas appliance installer in accordance with NFPA 54 (National Fuel Gas Code) and local authority having jurisdiction requirements. Shut down and allow the appliance and existing vent components to cool completely before servicing or extending the vent system. Maintain required clearances to combustibles as specified by the vent system manufacturer and applicable codes. Do not mix B-vent components from different manufacturers within the same vent assembly unless compatibility is confirmed.

Technical Specifications

• Elbow Angle: 45 degrees
• Diameter: 12 inches
Shape: Round
• Construction: Double wall
• Profile: Standard flat
• Weight: 4.2 pounds

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 12r45