Carl, We are fans of the Rooftech RT Mini product for applications that don't allow us to employ rafter attachments. We are primarily a SnapNrack installer and the RT Mini base works well with the SNR uppers. We have been using them for perhaps four years, maybe five and have seen no issue in that (albeit somewhat short) period of time.
Another option might be looking into Ironridge XR1000 rails which have much higher spans than the normal 48" (up to 12' depending on snow loading). https://www.ironridge.com/component/xr-rails/ Sincerely, Sam Haraldson <s...@onsiteenergyinc.com> Installation & Service Manager <http://www.onsiteenergyinc.com/> | o. (406) 551-6135 <https://www.facebook.com/onsiteenergysolar/> <https://www.instagram.com/onsiteenergyinc/> <https://twitter.com/onsiteenergyinc> <https://www.linkedin.com/company/onsite-energy-inc/> <https://onsiteenergyinc.com/bcorp> > >
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