4" DUST COLLECTION PVC TO 4" HOSE ADAPTOR By Peachtree Woodworking - PW425
4-1/2" To 4" Dust Collection Hose Adaptor is used to connect your dust collection line to your standard 4" dust collection hose. Hose clamps are required for this type of connection.Appx. OD on small end 3-7/8" x OD on large end 4-1/2".