Vent Setter for 3/4" brass vents

621-3/4" HAND VENTILATOR SETTER

For use with our 1-B brass vents.

1. Punch hole in material using.
2. Lay vent neck up on base, place material over vent, now slip vent ring on over vent neck.
3. A few even taps with an Osborne mallet will set vent.