"I wonder if this is what Mapleshade uses as the source material for their Isoblocks?"
You can bet on it...at many times the cost of the same ones sold at any HVAC supplier. Call it an audiophile tweak, make silly claims of proprietary design, add a little voodoo and there you have it.
You can bet on it...at many times the cost of the same ones sold at any HVAC supplier. Call it an audiophile tweak, make silly claims of proprietary design, add a little voodoo and there you have it.