IMPORTANT NOTES: In all linear slot diffusers, constriction of free area by blade relationships must be set carefully so as not to throttle airstream, with resultant Increase in static pressure and noise level criteria. It is recommended that care be exercised in setting blades to prevent such excessive constriction of air passageway. 2-Way throw may be obtained by staggering each 2 feet of pattern blades alternately from right to left.
