The 4 inch Inlet Hose Adapter allows attachment of other accessories including the lap-top tray ZA440.
It can be used to collect dust from shop tools like bandsaws, sanders, etc.
Requires 4 inch flexible vent hose (available at hardware stores).
All attachments for the Razaire 530 attach in seconds without any tools. It takes only a few moments to change from a table-top unit to a lap-top collector or even a vacuum with a 4" hose and variable suction. Low speed settings work great for picking up dust on workbenches without sucking up cutters and other heavier objects. 4" hose accessories work best with the inexpensive 4" vent hose available at most hardware stores.