Has anyone else come across these panels and have you been able to find any documentation / Approvals for these panels?
Markings say
“MK4” or “MK14” and “0701914”
The product approval is etched/embossed somewhere else on the panel.
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I’ve come across these black markings, multiple times, the same lettering and everything and have never been able to find it etched in the material. Most panels do have it etched but whenever I see these black markings I can’t ever find any etchings. Typically I have seen these in homes, built/installed with the home, from 2005-2007 time frame.
Bump, I can’t be the only one that’s come across these? Just came across more of them today.