I am assuming that i should put the slider in the screened bottom board for winter?
I'm in Texas and I put closure boards in when it gets down to 60s at night and 80s in the days. Bees must keep brood around 91 if I remember right, it's much easier when you help them.Worker bees help keep them warm when they are needed, when they are not needed it frees them up to do their job.
Acts2:37: Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?
38: Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
39: For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.
40: And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation