Yes, I did look at this site, it looks like a great idea. I see that you, TwT said in a following post that you were going to make some with this design. Did you? If you did, did not find them alot of work to construct, any better than just a "normal" screened bottomboard. I presently have on all my colonies solid bottomboards and really believe that from what I am hearing I need desperately to revise this practice and go for the SBB. I did purchase at the end of last summer a product called "varroa-nator" which is a SBB with plastic sides, I did not get instructions on how to apply this to the hive, I think I may have lost them actually. So, I think that I did recall that this was placed on the traditional bottomboard but rotated 360 degrees. I have zero experience with SBB, but don't they have NO bottom, other than the hardware cloth (??). I get the impression that the SBB allows the varroas to fall right onto the ground, never to climb back up into the hive. It sounds like using SBB certainly makes a difference with colony strength, probably helps with heat issues as well. Can advice be given on this matter. Thanks. Cindi