This switch is used with:
All Hurricane series units with rotary style blower switch.
All Old Air Products Cool Only & Heat/Cool Underdash style units. (200, 300, 400, 700 & 800 Series Units.
All Old Air Products Cool Only underdash style A/C Units (365M & 367M Series Units)
This switch is also commonly used on many of our competitors units as a Blower Switch and/or Mode Switch.