silding glass rooler

Hello, thank you for posting,

I believe your original roller assembly is no longer available. Start by taking a look at the 81-084 patio roller on the website. Compare the dimensions below to see how the housing compares. Your wheel looks around 1" in diameter where as the wheel on the 81-084 has a diameter of 1-1/4". Check to see if you were to use the 81-084 would the roller clear the bottom of the track. You could also order the 81-223 wheel with the 1-1/8" diameter along with the 81-310 axle kit if you think you need to swap out the wheel. Take a look at all the hardware suggested along with the related videos.

Let us know if you have any additional questions! 

Detail image of 81-084