Replacement Rollers

Thanks for posting. I am afraid this is just the inside portion of the roller assembly. The outer housing is probably still lodged in the door. We need to see the entire unit to narrow down what you might need. It is possible that you will need to remove the bottom panel of the door to get the whole thing out. Let me know if you have further questions. 

Hey there, Bob isn't here today but I'll do my best to assist.

To start, there is definitely an outer housing in the door, I can see it in your first two photos. Seeing as how this is an older aluminum door, you will likely need to partially disassemble the frame to access it. You aren't going to be able to identify a match until you do that, as much of a hassle as it is. That's just how these are designed.

To compound matters, there is good odds that your roller doesn't exist anymore. Seeing as how this is an older door, you need to be braced for that outcome. There's a lot of turnaround in this industry, and when it comes to aluminum doors like this it's basically a coin flip as to whether replacement parts are still made. I'd be happy to look into it for you, but I want to make sure we're on the same page.

Either way, you won't know until you remove the full assembly. I promise you that the outer housing is in your door, I'm looking right at it. You just need to access it.

Sure, I've circled it in the image below. I've also highlighted how the housing probably looks behind the frame of the door, which is currently obscuring most of it.

With very rare exceptions, all patio door rollers have two housings: internal and external. This is a hard and dependable rule. The reason for this is to allow them to adjust: when you turn the adjustment screw, you're pushing the internal housing at an angle while resting in the external housing, allowing it to remain in place while still capable of moving up and down.

Without two housings, your roller wouldn't be able to adjust, which is a necessary function for pretty much every patio door I've ever worked on. It would be very weird for a door manufacturer to just slap in a single-housing roller. That's not something that's done; like I said above, there are rare exceptions, but I'm pretty confident that you're not one of them. 

I promise you that the housing is there. Is it easy to get to? No, not really. You need to take the frame apart to get to it. Once you remove the frame screws you can take a mallet and a block of wood to gently--but firmly--knock the bottom rail off. That will give you access to the rollers. I know this is pretty annoying, but that's just how these doors are designed.

I also want to reiterate that even after you do all that, odds are good that we don't sell a replacement for your roller. Doors like this are very old and manufacturing companies don't really make replacement parts for them anymore. Once I see your complete housing I'm probably going to tell you that we can't help. Just want to make sure that we're on the same page before you go to all that effort. 

Either way, if there's even the slimmest hope that your roller is still something that can be supplied, you're not going to know for sure until you remove it.