Slot diffusers

XP 1124 Xtra Power 135 Mm Slot Cutter mm slot T-slot nuts are T-shaped and designed to fit along a T-slot track on a workbench or machine table 50 MM Micro Boring Head · 75 MM mmr 88 slot EDIT: My bad, found now on Dan's page that slot is 79mm That gives that a slot is about 20mm 20,25mm to be exact

mm88 slot Slot diffusers with 35 mm nominal width, with adjustable air control elements and self-powered Varyset flap for the adjustment of the active slot diffuser