Big Horn 11456 4Inch ABS Plastic Wall Mounted Blast Gate with One Quick Disconnect End for Dust Collection Systems

✅ One Port is tapered from 3.85" to 4.00" in Outer Diameter & 1-1/2” long to provide room to slide on hose and apply a hose clamp, ✅ Allows quick connection of 4" flexible dust collection hose to one end without hose clamps, ✅ Made from strong 1/8" thick abrasion resistant ABS plastic that will withstand abrasive nature of sawdust and wood chips, ✅ Inside is smooth to allow maximum airflow, ✅ Built in stop to prevent sliding plate from coming out of housing