Features:

• Both Ports are 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
• 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 frame
• Overall dimensions: 6-1/2″ x 5-1/2″ closed and 10-1/4″ x 5-1/2″ in open position
• The 4″ ports are 1-1/2″ long to provide room to slide on hose and apply hose clamps
• Molded using ABS material for rigidity and durability
• Has built in wall mounting bracket to allow secure anchoring to prevent sloppy opening/closing
• Hose will slide on top of this 4” Port