Wall mount feature on this WoodRiver Blast Gate Dust Collection Fitting provides a large, 6-1/2" x 3-1/4" flange with mounting holes to attach the fitting on the wall in either the horizontal or vertical direction. Common blast gate function allows you to close one branch of your central dust collection system while you are using the other. Simple open or shut design has flat, square plate that moves inside a 3-sided frame to provide a pass-through or shut-off to connect your dust collector to your system or a branch line to one of your tools. Molded fitting has overall dimensions of 6-1/2" long and 5-1/2" wide closed; 10-1/4" long and 5-1/2" wide in the open position. Each 4" OD port on either side of the gate is 1-1/2" long to provide room to slide on hose and apply hose clamps at each connection. Molded using ABS material to maintain shape and withstand woodshop environment.Wall mount flange molded on blast gate fitting to shut-off one dust collection line at a time Simple open or shut design has flat, square plate that moves inside a 3-sided frameOverall dimensions: 6-1/2" x 5-1/2" closed and 10-1/4" x 5-1/2" in open positionEach 4" OD port is 1-1/2" long to provide room to slide on hose and apply hose clampsMolded using ABS material for rigidity and durability About Us: Founded in Boston in 1928, Woodcrafts operations were moved to Parkersburg, West Virginia in 1989. Its been over 90 years since Woodcraft first began selling high quality woodworking tools and supplies out of a one room shop in Bostons North End, and Woodcraft is still firmly committed to providing woodworkers with superior products and expert advice. We are America’s leading supplier of saws, planes, power tools, hand tools, wood stain and paint, routers, sanding, wood, kits, dust collection and more. Our award winning family of brands includes WoodRiver, Highpoint, Woodcraft and Woodcraft Magazine as well as the greatest selection of woodworking books, videos, and plans