The Selkirk 187705 adjustable wall thimble is a critical safety component for installing B-Vent piping through walls in HVAC/R applications. Designed for professional use, this 5-inch galvanized steel thimble provides the necessary fire-rated clearance, allowing the vent pipe to pass safely from an appliance to the exterior without compromising structural integrity or fire safety. Its adjustable nature accommodates various wall thicknesses, simplifying installation for technicians.
This round B-Vent wall thimble is specifically used with natural gas or propane appliances that require Type B gas venting. It creates a protective sleeve around the vent pipe where it penetrates a combustible wall, preventing heat transfer and ensuring compliance with safety codes. The galvanized steel construction offers durability and corrosion resistance, essential for long-term performance in exhaust systems.
When purchasing, HVAC/R professionals should verify the 5-inch diameter matches their B-Vent pipe system and that the thimble's adjustability suits the wall thickness of the installation site. Proper selection ensures adequate clearance and fire safety, which is paramount for any venting project. Always refer to the appliance and vent pipe manufacturer's instructions for specific installation requirements and local code compliance.
Leave a Reply