Bearing roller options
That means galvanized steel roller stems and either 7-ball or 10-ball bearing rollers, not the older bare-steel wheels you find on pre-1970 doors. We carry both nylon and steel rollers on the truck. In a cold-climate area like this one, we lean toward nylon for most jobs - the bearings don't stiffen up the way steel can when temperatures drop hard, and they run quieter on tracks that have already taken thirty-plus years of Morgantown-area winters.

