Selkirk 4" BW Attic Shield (Oval Type B Gas Vent) w19.4 000 BTU and 43

000 BTU and 43

A 1/4 turn of the valve will allow the user to open the valve and for gas to pass through

Pipe Threading Tape

For use with Symmetry and Symmetry B 42" fireplaces

little heat is left over from the process to be given off

Selkirk 4" BW Attic Shield (Oval Type B Gas Vent) w19.4 000 BTU and 43Selkirk 4" BW Attic Shield The Type BW attic shield is used on a single story AVS building or on the top story of a multi story building for Type BW gas vent. A 26 gauge galvanized sleeve should extend from the top of the ceiling plate into the attic. A Type BW attic shield is required by Los Angeles Code and UMC. Oval Type B Gas Vent Model OV Type B Gas Vent offers all of the advantages and installation conveniences of round pipe in a compact oval