Blue is standard practice. Nothing more. If it were heat it would be black I think with yellow markings. (See pic)...and the 107 is actually a 106, which when live measures out at 105...we had them for years.
Blue is standard practice. Nothing more. If it were heat it would be black I think with yellow markings. (See pic)...and the 107 is actually a 106, which when live measures out at 105...we had them for years.
Regards, Jim