Al Fresco Elite Collection 13' 1.5" Aluminum Lower Guide Channel for Top Hung Sliding / Folding Exterior Doors Customize your top hung sliding door system by purchasing individual pieces. This bottom guide will ensure that the bottom of the door is secure as it slides, preventing swinging. The Al Fresco Elite Series is made for 2 to 8 leaf folding wood doors. The construction is made to be corrosion resistant and improved strength. The channel is concealed to enhance the appearance, and mortise or non-mortise parts are available. Precision bearings reduce rolling resistance and the durable polypropylene channel provides quiet operation. Features: 13' 1.5" (4 m) Length 0.8" Width x 0.83" Height Made of polypropylene Fits inside 943.33.1** door guide channel For a complete set order: Running Track and Guide Channels Pivot Assembly or Jamb Hinge Set Intermediate Hinge Set (with or without handles) Intermediate Hanger Set End Hanger Set Frame, Door and Track Seals Flushbolts Hafele is committed to finding better ways and it shows in their innovative and beautiful line of door hardware products. These products will lead to better organization and the peace of mind that comes with Hafele brand products. In addition to quality and beauty, Hafele is committed to reducing their environmental impact, so you can buy these products with confidence in every aspect.