Flanges are great for setting up some DIY dust collection in the form of hoods, going through walls or garage doors, cabinets or you just having a place to get your hose out of the way, mounting straight to the wall.
Terminology: The "Hose" side is what connect to the host attached to your dust collector. The "Tool" side is the dust port of your tool.
Example: If you have a 4" Hose Connector, you just need a 4" Flange.
