I install mine when the day time temps are in the 30's F range which is usually around DEC 1. I don't like crawling around on cold concert and working with my hands in the cold.
I usually leave all four flaps open and close them as the temps get colder but very rarely that I close off all four flaps. I am outside the Chicago IL area so you can get an idea about winter temps.
Jim W.
I usually leave all four flaps open and close them as the temps get colder but very rarely that I close off all four flaps. I am outside the Chicago IL area so you can get an idea about winter temps.
Jim W.