> Can someone give some insight as to the better size before I build them > with the wrong size screen? Honey bees can get through.Anything with more holes per inch than 6-mesh (6 holes per inch). In fact, I used 5-mesh hardware cloth sheets as queen excluders on 2-queen Farrar hives for years, since 20x20 excluders were not available. Some normal bees, but AHB in particular, can get through 6-mesh. Also consider any wasps or hornets in your region before deciding. If robbers can easily get through, then the whole hive bottom is open to robbing. That may not be a big problem for strong hives, but weaker ones may be robbed out. *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm