National N343-137 72" By-Pass Door Kit - Galvanized (771D)

� Doors can not accidentally jump the track

� Wheels never need lubrication

� Doors can be hung or removed with out detaching hangers



National N343-137 72" By-Pass Door Kit - Galvanized (771D). Doors can not accidentally jump the track. Wheels never need lubrication. Doors can be hung or removed with out detaching hangers.