Selkirk 1740066 Double Wall Flex Gas Vent 4in 5ft

Product Description

The SELKIRK 1740066 is a double wall flexible gas vent connector designed for use as a segment within an unenclosed Type B gas vent system. Measuring 4 inches in diameter and 5 feet in length, it provides a quick, easy offset between sections of rigid Type B gas vent pipe. The flexible double wall construction simplifies alignment during installation, reducing the need for additional fittings when connecting appliances to existing vent runs. Licensed HVAC technicians and plumbers install this connector in residential and light commercial gas appliance venting applications.

The 1740066 is listed for use in conditioned and unconditioned attics and crawl spaces, making it suitable for a wide range of residential installation scenarios. It connects directly to standard Type B gas vent components. The flexible design accommodates offsets that would otherwise require multiple rigid elbows, streamlining vent routing in tight or irregular spaces. It is available as part of the MetalBest DWC product line, which covers 3-inch, 4-inch, and 5-inch diameters in 2-foot, 3-foot, 4-foot, and 5-foot lengths.

Key Features

• Double wall flexible construction allows quick offset between rigid Type B vent sections
• 4-inch diameter, 5-foot length fits common residential gas appliance vent runs
• Listed for use in conditioned and unconditioned attics and crawl spaces
• Safety certified as a segment of an unenclosed Type B gas vent system
• Connects directly to standard Type B gas vent components without additional adapters

Compatibility

Designed for use as a segment of standard Type B gas vent systems. Compatible with rigid Type B gas vent pipe components. Listed for unenclosed Type B applications including attic and crawl space installations.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with the International Fuel Gas Code (IFGC) and the appliance manufacturer instructions. Shut off the gas supply and allow the appliance to cool before beginning any vent work. This connector is listed as a segment of an unenclosed Type B vent system only and must not be used as an enclosed or concealed penetration. Confirm all vent joints are secure and leak-free before restoring gas service.

Technical Specifications

• Diameter: 4 inches
• Length: 5 feet
• Type: Double Wall
• Vent System Compatibility: Type B Gas Vent

Standard Information

• Brand: SELKIRK
• Manufacturer Part Number: 1740066