Hart Cooley 4eft B Vent Tall Roof Flange 4 Inch

Product Description

The HART COOLEY 4eft is a tall roof flange designed for 4-inch Type B gas vent systems. It provides a weather-tight seal where the B-vent pipe penetrates the roof deck, protecting against water intrusion at the flashing point. This fitting is rated for flat roofs through roofs with a pitch up to 1/12, making it suitable for low-slope residential and light commercial applications. Licensed HVAC technicians and plumbers install this component as part of a compliant B-vent venting assembly on natural gas or propane appliances.

This roof flange is used where a 4-inch B-vent system exits through a low-slope or flat roof. Typical applications include venting for gas furnaces, water heaters, boilers, and other Category I appliances that require Type B double-wall vent pipe. The tall design provides additional clearance and flashing height suited to low-pitch roof conditions from flat up to 1/12 pitch.

Key Features

• Fits 4-inch Type B double-wall gas vent pipe
• Tall flange design for flat to 1/12 roof pitch applications
• Provides weather seal at roof penetration point
• Lightweight at 2.45 pounds for easier overhead installation

Compatibility

Designed as an OEM-style replacement or new-installation component for 4-inch Type B gas vent systems on residential and light commercial appliances.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with NFPA 54 (National Fuel Gas Code) and the appliance manufacturer's venting instructions. Shut off gas supply and allow the appliance to cool before servicing any vent components. Ensure the flange is properly seated and sealed against the roof deck to prevent water infiltration. All B-vent installations must maintain required clearances to combustibles as specified by local and national codes.

Technical Specifications

• Vent Size: 4 inches
• Roof Pitch Range: Flat to 1/12
• Weight: 2.45 pounds

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 4eft