A big minus on 1/4"... Bees, yellow jackets, robbers, etc. can get through. You are adding a 320 sq inch opening to defend. Every SBB I've seen uses 1/8" -Tim *********************************************** 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