Selkirk 1740044 Double Wall Flex Gas Vent 4 Inch 4 Foot

Product Description

The SELKIRK 1740044 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 4 feet in length, it connects directly to standard Type B gas vent components. The flexible construction allows technicians to create offsets between rigid vent sections, simplifying alignment during installation without the need for additional fittings. It is safety certified for use in both conditioned and unconditioned attics and crawl spaces, making it suitable for a wide range of residential venting configurations.

This connector is intended for gas appliance venting applications where a flexible transition between rigid Type B vent sections is needed. It is well suited for residential installations where alignment between a gas furnace, water heater, or boiler and the existing vent stack is difficult to achieve with rigid pipe alone. Licensed HVAC technicians and plumbers working on natural gas or propane appliance venting installations will find this connector useful in tight or offset runs.

Key Features

• 4 inch diameter compatible with standard Type B gas vent systems
• 4 foot length provides flexible reach for offset and alignment corrections
• Double wall construction meets Type B gas vent safety requirements
• Safety certified for conditioned and unconditioned attics and crawl spaces
• Eliminates the need for additional offset fittings in many installations
• Listed as an approved segment of an unenclosed Type B gas vent system

Compatibility

Listed for use as a segment of an unenclosed Type B gas vent system and designed for direct connection to standard Type B gas vent components. Compatible with the SELKIRK MetalBest DWC Double Wall Flexible Gas Vent product line, available in 3 inch, 4 inch, and 5 inch diameters and 2 foot, 3 foot, 4 foot, and 5 foot lengths.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with the appliance manufacturer instructions and applicable local codes, including NFPA 54 and IFGC requirements for gas vent systems. Shut off the gas supply and allow the appliance to cool completely before disconnecting any vent components. The flexible connector must be installed as a segment within a compliant Type B venting system and must not be used as a substitute for a complete venting assembly. Do not compress, overstretch, or sharply bend the connector beyond its designed flex range.

Technical Specifications

• Diameter: 4 inches
• Length: 4 feet
• Vent Type: Type B Double Wall Flexible Gas Vent
• Application: Conditioned and unconditioned attics and crawl spaces

Standard Information

• Brand: SELKIRK
• Manufacturer Part Number: 1740044