Does anyone have firsthand experience with the Nording Eriksen Keystone pipes? I've always been intrigued by this type of system pipe, and suspect it would work very well. However, the ones I've seen are metal pipes, and I just don't like the look. The Eriksen looks a little more natural to my eye, and if they work well, I would be willing to try one.
One of my big questions is if they must be used with the keystones, or is that optional? I think some of the metal pipes can be used without any type of absorber, or can use a circle of pipe cleaner as an absorber. Is this true with the Eriksens?
One of my big questions is if they must be used with the keystones, or is that optional? I think some of the metal pipes can be used without any type of absorber, or can use a circle of pipe cleaner as an absorber. Is this true with the Eriksens?





