OSB621.1 1″ Hand Ventilator Setter

Osborne 1″ Hand Ventilator Setter.

Instructions for setting 1″ Ventilators:

1.- Punch 3/4 hole in material (Use Osborne No. 149 -3/4” punch or on vinyl use No. 149-5/8 punch).

2.- Lay ventilator neck up on base, place material over ventilator, now slip ventilator ring on bow side up. A few even taps with a rawhide mallet will set ventilators.