I have a customer that has D&B. Other then unico and space-pak are there manufacturers ?
OK, I'll bite, what's a Mini-duct?
Unico and Space Pak (originally owned by D/B) are the 2 that are best known and ARI rated. There are a few others but personally without the ARI rating knowing what capacity you'll get I'm leery. Also those 2 have great factory support.
Chill, he's talking about the high velocity stuff