Patio sliding door replacement rollers

I purchased a home that has an older CAPITAL Windows & Doors 910 series patio door. I know that this company no longer exist, however the sliding door is in need of rollers. Unfortunately the current weather in this area and temperatures have prevented me from removing the door to look at the existing rollers and I am hopefully waiting for some relief from the weather to do so. However, if i can identify the replacements without removing the door at this time, than I can remove the door and replace them without having to do it twice. These roller have an adjustment screw for each of the two rollers that you can adjust at the bottom of the window using a screw driver.

I will have to wait until the outside temperatures improve considerably. I have at least did some adjustments and cleaning of the rail it sits on, which were enough to be able to open and close the door for now. The ultimate solution will be to replace the complete door next spring or summer. If things change and the door cannot be easily opened and shut before winter is over, than I will have to take it out and look at the rollers and order some. Thanks
for your time and response.