Check the listing for details. WOODRIVER Dust Connection 2-1/2" Wall Mount Self-Clean Blast Gate. Condition: New. Listed at 20.48 USD. WOODRIVER Dust Connection 2-1/2" Wall Mount Self-Clean Blast Gate, 173017, Wall mount provides a large 6-1/2” x 3-1/4” flange with mounting holes to attach the fitting on the wall either horizontally or vertically, Self-cleaning design minimizes clogging 10-1/4" x 5-1/2" in open or closed position, Each 2-1/2" OD port is 1-1/4" long, Molded using ABS material for rigidity and durability, The Wall Mount feature on this WoodRiver Dust Connection 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. The Self-Clean design features a rectangular plate with an opening on one end that moves inside a 2-sided frame to prevent clogging. The Blast Gate function provides a.