Ryerson carrier

So I took my Inca to the vet Tuesday because he had started to powder or crush his food in his bowl and slacked off on his hay eating (Inca was 7). The vet discovered that Inca had malo. They kept him to do a procedure to file down his back teeth (roots had also grown through his jaw bone). My vet called me Tuesday night around 10:00 pm to tell me that Inca had passed...he made it through the procedure and came out of the anesthesia, then just stopped breathing. She said he was just too weak to fight (they tried to bring him back). So after having my heart broken, I'm gonna take my other 4 chins just to have their teeth checked. I just ordered a Ryerson 4 hole carrier. I couldnt find a description on their site (just the picture). Can anyone tell me if they open from the top or front and do they have 4 individual doors? Thanks in advance.

:cry3: