Reducer Plastic - 4" - 2 1/2" - For Dust Collector.

Dust collection adapter 1" to 4" A newer design to improve airflow, this provides a variety of step down/reducing options. Cut the unneeded portion to suit your application.

5" to 4" Plastic Reducer It is designed for dust collection system assembly and connecting a 5" hose to a 4" hose. Size: 5" to 4".

This Eccentric Reducer provides a step-down from a larger main line to a smaller branch line. This step-down increases air velocity near the machine where it's needed the most.

2-1/2" Universal Adaptor - Woodstock This universal adapter provides a multitude of dust collection reducing options. Simply cut away unneeded steps with a hacksaw.

Step down from a main 6" inlet to a single 4"

This Eccentric Reducer provides a step-down from a larger main line to a smaller branch line. This step-down increases air velocity near the machine where it's needed the most.

Adapter 1" to 6" Dust Collection Accessory This 7-step adapter is a great option for reducing. Outside diameter step sizes include 1", 2", 2 1/2", 3", 4", 5" and 6" Unneeded steps can be easily cut away.

This concise 50-page book guides the reader through all the necessary steps in setting up his/her own central dust collection system. Simple and skillful, this book delivers a wide range of tips, hints, suggestions and techniques to making you workshop a safer and cleaner environment to work in.

This quick connector reducer fitting is used to adapt a 4" dust collection hose to a 5" diameter collection hose. This connector Threaded for ease and secure mount of the 4" hose to the fitting.

This Galvanized Steel Ductwork Reducer is raw (uncrimped) on both ends. Useful for reducing the diameter of your ductwork runs for connecting to your tools and/or flex hose.