Are you able to match these rollers? I believe that the patio door was made by Philips.
1 1/4" wheels.
Tom from SWISCO responded:
May 7, 2019
It's tough to make out the precise size of your housing, but it looks close to 1-1/4" tall. With that in mind, consider our 81-166S or 81-166. One of these may work for you, but look over our photos and dimensions to confirm.