The Selkirk J51TPI is an A-V Tee Plug Insulated, 5" from the Selkirk chimney and venting line. Insulated plug that closes the bottom of a chimney tee.
Selkirk factory built chimney and stove pipe components are listed systems for wood, oil, and gas appliances. Insulated A-V sections and their supports, shields, and terminations are designed to work together, so use matching Selkirk parts throughout the run to keep the listing and clearances valid. Check the pipe size and type on your job before ordering so the fitting matches.
Rural Energy stocks Selkirk factory built chimney components along with the heating equipment they serve, and ships to dealers, contractors, and homeowners.