Re: Dadant depth frames
I got the excluders from Propolis-etc in Canada. They were WAY too expensive due to shipping costs. IMO, use Lang excluders and make wood frames.
Propolis sells frames ready made and maybe cheap enough to be worth your time. I built my own frames with 31.5 mm spacing putting 14 frames in a hive. I could give you a long list of reasons why 1.5 inch spacing is not optimal, but it is what Dadant and Brother Adam used. In the end, it all gets down to how you manage the hive.
Check with Dadant to see if they have some foundation in stock. I'm not a fan of plastic foundation. There are too many issues getting it drawn.
NW Alabama, 50 years, 20 colonies and growing, sideliner, treatment free since 2005, 14 frame square Dadant broodnest