The PowerTec rectangular nozzle is a perfect solution if a smaller rectangular dust hood is necessary for the dust removal system. Easy to install and powerful, this handy accessory will optimise the suckage of dust, dirt and chips from your shop and in your dust collector. Create a cleaner, healthier shop environment with this essential ingredient. Hood: measures 6 x 3-1/2 inches. 2 Nominal End Measures 2-31/64" - 1/2" Diameter and 2-15/64" I.D.