The BEST way to collect dust from cleaning ceramic or porcelain greenware. 
As you work over the filter area, the 200+CFM blower motor draws dust down into the 16" x 20" extended surface filter and traps it there. When finished cleaning, simply dump filter to remove dust. Filter is reusable and replacements are readily available. This quiet fiberglass unit can be countersunk for permanent installation or used as a portable cleaning station and stored easily when not in use. Outside dimensions are: 22-3/4" x24-1/4" x 5" deep. Plugs into standard 110V electric outlet. No outside ventilation is required. No assembly required.