Hart Cooley 6ef B-vent Roof Flange 6 Inch Standard

Product Description

The HART COOLEY 6ef is a standard B-vent roof flange designed for 6-inch Type B gas vent systems. It seals the point where a double-wall B-vent pipe penetrates the roofline, providing a weather-tight transition between the vent pipe and the roof deck. Rated for roofs with a pitch up to 5/12, this flange is a standard component in residential and light commercial gas appliance venting installations. HVAC technicians and plumbers install this flange when routing furnace, boiler, or water heater exhaust through the roof. At 2.10 pounds, it is lightweight enough for single-person installation.

This flange is used in natural gas and propane appliance venting systems that use Type B double-wall vent pipe. Typical applications include upflow and horizontal furnaces, atmospheric water heaters, and boilers that require vertical vent termination through the roof. It is suited for residential new construction and replacement venting projects where the roof slope does not exceed a 5/12 pitch. Licensed HVAC technicians and gas fitters are the primary installers of this component.

Key Features

• Fits 6-inch Type B double-wall gas vent pipe
• Rated for roof pitches up to 5/12
• Lightweight construction at 2.10 pounds for easier single-person handling
• Provides a weather-resistant seal at the roof penetration point
• Standard flange profile for straightforward installation on low- to moderate-slope roofs

Compatibility

Designed as an OEM-style replacement or new-installation component for 6-inch Type B double-wall gas vent systems on roofs with a pitch up to 5/12.

Installation Notes

Installation should be performed by a licensed HVAC technician or gas fitter in accordance with NFPA 54 and local mechanical codes. Shut off the gas supply and allow the appliance to cool completely before beginning any vent system work. The flange must be flashed and sealed to the roofing material per the manufacturer instructions and local building code requirements to prevent water infiltration. Do not use this flange on roof pitches exceeding 5/12 without selecting an appropriate steep-pitch flange rated for the actual slope.

Technical Specifications

• Pipe Size: 6 inches
• Maximum Roof Pitch: 5/12
• Weight: 2.10 pounds
• Vent Type: Type B Double-Wall Gas Vent

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 6ef