National Hardware N343-087 770D By-Passing Door Hardware in Galvanized Designed to provide positive door alignment and smooth rolling operation for sliding doors from 3/4-Inch to 1-3/8-Inch thick and up to 60-Pound each. Doors can not accidentally jump the track Wheels never need lubrication; Dial-action hanger allows easy vertical adjustment Doors can be hung or removed with out detaching hangers Rail offers steel track with decorative finish Door guide provides smooth operation and allows up or down adjustment of doors Dial-action hanger allows easy vertical adjustment without tools Doors cannot accidentally jump the track
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