I needed a regulator quickly due to a failed unit. I purchased a competitor unit but quickly found out why it was much cheaper. Having to do the job twice, tearing the door membrane during a second tear down of the door. I should have paid that bit more for these Űro branded units from the beginning and saved myself time and money. All the pulleys run on proper roller bearings and are super quiet in operation. They are silky smooth too. Ordering the opposite door for when the inevitable failure happens. Lifetime Warranty gives total peace-of-mind. My photos show the competitor unit. Although it worked quietly, the 'drop' on opening the window wouldn't 'dial in'. No such problems with the Űro unit as the video shows. Heritage Parts Centre are easy to deal with too