I got a call today asking about the above. I have never used one (I plan ahead:grin but I did find these. Never heard of Garvin and don't see where these are listed. Are these Kosher?
I called T&B today and they told me they don't make these. Garvin's are the only ones I can find online and I'm not sure if they're UL listed. Do you have a model number for the T&B split bushings?
We wanted to use them on a recent job and the inspector said, they do make them but none of the ones he came across were approved, so take care to check before you buy