n20LX - That's interesting about what DSS said. When I spoke to them (several occasions), I almost purchased the damper that they manufacture, but didn't since I had never heard anything about them (good or bad). And, since the DSS damper was $300 and the Fluidampr was $350, I figured I would stay with a name that I had heard of before. Plus the Fluidampr is hermetically sealed (welded) so it shouldn't leak and it's SFI SPEC 18.1 certified.
I hope I didn't make a mistake?
E