PRODUCT DESCRIPTION Big Horn Blast Gates optimizes the efficiency of your dust collection system by seamlessly directing the airflow from one machine to another. Save time and hassle with the handy sliding gate; just glide the gate through the case for a thorough cleaning. Used in every dust collection system to control air flow from one machine to another, blast gates maximize system efficiency. Plastic blast gates are economically priced, have a textured surface and an easy sliding gate action. Features: Standard 4" opening which allows you to clamp a standard 4" hose around it The other end is tapered to accept any 4" fitting or port The Quick Disconnect Blast Gate is a must for any wood shop Made from strong 1/8" thick abrasion resistant ABS plastic that will withstand abrasive nature of sawdust and wood chips Both Ports are 1.50" Deep and One Port is tapered from 3.85" to 4.00" in Outer Diameter More Information Model# 11442 UPC 766565114421 WARNING California Proposition 65 Brand Big Horn FROM THE MANUFACTURER Big Horn Blast Gates optimizes the efficiency of your dust collection system by seamlessly directing the airflow from one machine to another. Save time and hassle with the handy sliding gate; just glide the gate through the case for a thorough cleaning. Used in every dust collection system to control air flow from one machine to another, blast gates maximize system efficiency. Plastic blast gates are economically priced, have a textured surface and an easy sliding gate action.