388 products Alibaba.com offers 388 bifold door roller products. About 20% Sliding Door Bottom Roller / Sliding Door Top Roller / Bifold Door Roller KZD001-1.
The 23-120 rollers are only meant to guide the door in the top track. They work with the 21-092 bottom pivots, which hold the door up.
Product Description. This bi-fold door top pivot guide roller is constructed from plastic. It features a 11/16 In. nylon top guide wheel and a sing loaded pivot shaft.