Harken Carbo Airblocks 57Mm Triple Carbo Block Swl 2382 ?

IS this similar to the H194? It's about 1/2 the price. Any reason why not to get it instead?
H194 I think is 40mm? so this would be slightly larger?

More info - I'm currently running a triple block from a Hobie 18. Works well - really lack of clearance hasn't been a problem. but I got a upper 40mm triple on a used boat I just picked up and figured I'd match it with a low profile lower as well.

So rather than 220 bucks for a H194 - would a 57mm triple Carbo (newer style?) work as well? Is there a reason to use the H194?

On my H14T, I'm using a 40mm Harken (the triple carbo 40mm that everyone here seems to use, Harken 2640) and for the lower one, I'm using a Harken carbo 57mm but not the H194 that was out of stock here (France) so I took the 2140 that works perfectly (and less expensive than the H194).

Nicolas

The offset on the cam is a lot greater on the 194 allowing one to sheet out a lot faster. I think the 194 might also allow more flexibility on the adjustment angle. I bought the triple 57mm triple carbo for its cost advantage but if I had it to do over I might have spent the extra for the 194. When I get the angle adjusted to work well on the tramp it doesn't cleat so well on the wire. When I adjust the angle for the wire it's hard to release on the tramp. I'm guessing there is a reason Hobie supplies the 194 with their new boats and not the cheaper carbo block. Going to a 40mm base block might have even tighter clearances as they are designed primarily for dinghy's.