Build your own custom Downdraft Sanding Table with this kit. Customize to suit your needs and save money at the same time. Kit includes 4 downdraft panels with non-slip rubber grommets, a 4" dust port, and detailed plans for building the box. You just need to build the box, attach the included dust port, and connect it to your dust collector or shop vacuum. Each panel measures 6-3/4" W x 16-1/2" L and has 13/16" side flanges. Combine multiple kits to build a larger Downdraft Sanding Table. Panels include orange plastic work stops that can be positioned in any downdraft hole.