What kind of smoker is that? what powers it? Sounds like he is speaking German. I do not think anyone realizes the real benefit to this design, it could solve one big problem many have commented on often on this forum. A 1x10 is actually 3/4x 9 & 1/4, not being wide enough to make a deep. If you use your band to give you your space you usually rabbit out, and lower band on upper box sitting on upper band of lower box, a rabbit is not needed, or if anything a partial rabbit. Whereas in the past I have had to glue a strip on each 1x10 I used for deeps, using the bands, I can use the 1x10 without adding to it's width.