Linear Slot Diffuser - Removable CoreSlot diffusers can be installed individually in set lengths or in a continuous line. They can also be installed in any type of ceiling application. The modules are available with a 20mm or 25mm Slot with the number of slots ranging from 1 to 8 slots and are further available as fixed or removable core. (Fixed Core Model LSD FC, Removable Core LSD RC. The air pattern control is adjustable from the diffuser face and is achieved by means of an adjustable