Hart Cooley 4E12A SA11265 Adjustable B-vent Pipe

Product Description

The HART COOLEY 4E12A SA#11265 is a 4-inch by 12-inch adjustable B-vent pipe section used in Type B gas vent systems for residential and light commercial heating appliances. This adjustable pipe length accommodates minor variations in vent run measurements, making field installation more precise without cutting fixed-length sections. Type B double-wall construction keeps outer surfaces cooler than single-wall connectors, which matters in tight chases and near combustibles. HVAC technicians and plumbers install this component as part of a listed venting assembly serving natural gas or propane appliances.

This adjustable B-vent pipe section is suited for residential gas furnaces, boilers, water heaters, and space heaters that require Category I, fan-assisted or draft-hood-equipped venting. It is used in vertical vent runs and offsets where a fixed pipe length would not align properly. The adjustable feature spans a range within the nominal 12-inch length, allowing technicians to fine-tune the run without additional fittings. Installation is typically indoors, routed through walls, ceilings, or mechanical chases.

Key Features

• Adjustable length within nominal 12-inch range for flexible field fitting
• 4-inch diameter fits standard Type B vent system fittings and appliance collars of the same size
• Double-wall Type B construction reduces outer surface temperature compared to single-wall connectors
• Listed for use with natural gas and propane appliances requiring Category I venting
• Compatible with other Type B vent system components of the same diameter and listing

Compatibility

Designed as an OEM-style replacement and new-installation component for Type B double-wall gas vent systems with a 4-inch diameter. Compatible components must share the same diameter and vent system listing.

Installation Notes

Installation of B-vent pipe must follow the appliance manufacturer instructions and the International Fuel Gas Code (IFGC) requirements for Type B venting clearances and support intervals. Shut off the gas supply and allow the appliance to cool completely before servicing or modifying any vent section. All joints must be secured according to the vent system manufacturer instructions, and supports must be spaced to prevent sagging. This work is typically performed by a licensed HVAC technician or plumber.

Technical Specifications

• Diameter: 4 inches
• Nominal Length: 12 inches
• Vent Type: Type B Double-Wall Gas Vent

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 4E12A SA#11265