Thanks, Mike.
My 'glider fits a 15 - 18T sprocket at the rear, and is sized for a 38T ring at the front.
The front section of the 'glider at the ring is 13.5 mm wide. Pls note, though, that this 'glider is just a few months old, and all three of its tabs at the front fit snugly together. On my older one, that fit became looser with time (maybe as a result of the plastic surgery described below?), and sometimes one part or another of the front section of the 'glider bulged outwards a bit. Easily enough corrected.
On Freddie, as on my previous Raven, I run a 17T sprocket with a 36T ring. The latter size accounts for the unseemly visible teeth at the rear of the ring.
(OTOH, making a virtue out of necessity whenever poss, that smaller ring allows for more
play slop in the setup, both fore-and-aft and up-and-down. "Slop" is a precise engineering term, for which I'm sure there's a compelling German noun, but I don't know it.
)
My chainring is a Rivendell alloy item, mfd by Origin8, I believe. Its teeth are 2.8mm thick, just within the allowable/recommended thickness. The "body" of the ring is exactly 3 mm thick.
To ensure as little friction as poss betw the inner edges of the 'glider and the body of the ring, I cut off the small collar facing the ring on both faces of the 'glider where it embraces the front and rear sections of the ring.
On my Raven, when I surgically modified the 'glider to fit the smaller ring, I cut away the parts of the front section of the 'glider which cover the rear section of the ring. Thus, the teeth at the rear of the ring were wholly exposed & visible. (I would ask onlookers of a delicate disposition to avert their eyes.) So far as I could tell, over the eight years I owned the Raven, very little crud entered the 'glider via the surgically removed bits at the front.
For most of those 8 years, I used a Surly stainless ring, which is quite a bit thinner than the Rivendell item. Hence, I didn't trim the "collar" on the inner & outer front sections of the 'glider where they covered the teeth of the Surly ring.
Eventually, I switched out the Surly ring for the Rivendell, 'cos the latter produces
no tight spot in the chain. After riding two-wheelers for, I dunno, 60-plus years, and being aware of tight spots in the chain for more than half a century, I was equal parts surprised and delighted to find a chainring that created no tight spot.
Hope this is helpful, Mike. I have no hesitation at all in recommending a 'glider, if your chainring is 3 mm thick or thinner. I don't know if Hebie makes 'gliders to fit your rings.
Good luck! John