Andersen Gliding Door Tandem Roller Assembly for 8' Tall Doors (1982 to Present)

Andersen Patio Door Tandem Roller Assembly for 8' Tall doors. Works with 200 Series Narroline, 200 Series Perma-Shield and 400 Series Frenchwood Gliding Patio Doors manufactured from 1982 to Present. Dual ball bearing rollers on bottom of the operating door panels provide smooth gliding operation with self-contained leveling adjusters. Do not use the regular tandem roller assembly for 8' tall doors. Note: Most patio sliding glass doors are designed with two roller assemblies, one at each bottom corner of the sliding panel. For the best performance, we HIGHLY RECOMMEND replacing both rollers at the same time to prevent excess strain on a single new roller paired with an older one.