Funny you should ask. I bought the left latch dog assembly because the busted one is on the left as I looked up at it in the boat. Turns out, that's not what "left" means. There's a whole thread of folks who are confused by the labeling of this product, with their interpretation of right and left. Having made that mistake, the only explanation I can come up with is that the "left locking" means that the latch is in the locked position when the handle is turned to the left (which I would do with my right hand standing below the hatch looking forward). Suggest a picture of the hatch lid with the latches installed and arrows labeling the right and left assemblies. So I bought the right latch dog assembly. Turns out, the right mushroom cap is bonded to the glass...previous owner tried to repair a crack and glued the whole assembly together and I'd need a sledge hammer to get it off. So, spare parts inventory just went up by two and now I'm looking for a replacement hatch. Moral of the story..look before you leap. Ugh!