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2. Diffuser Mountings: <br /> a. Lay-in: Diffuser housing sized to fit between ceiling exposed suspension tee bars and rest on top surface <br /> of tee bar. <br /> ' b. Duct-mounted. <br /> 3. Diffuser Patterns: <br /> a. Fixed: Fixed position core with concentric rings or louvers for radial air flow around entire perimeter of <br /> diffuser. <br /> ' b. Adjustable: Manual adjustable core with concentric rings or louvers, fully adjustable for horizontal to <br /> vertical air flow. <br /> 4. Diffuser Dampers: <br /> a. Opposed Blade: Adjustable opposed blade damper assembly,key operated from face of diffuser. <br /> b. Integral: Combination volume control and pattern adjustment for linear diffusers. <br /> ' 5. Diffuser Accessories: <br /> a. Equalizing Deflectors: Adjustable parallel blades in frame for straightening air flow. <br /> ' b. Blank-Off Baffles: Arc segments designed to fit into diffuser housing to divert air flow from impinging <br /> on obstruction,and to create directional pattern. <br /> c. Operating Keys: Tools designed to fit through diffuser face and operate volume control device and/or <br /> ' pattern adjustment. <br /> 6. Diffuser Finishes: <br /> ' a. White Enamel: Semi-gloss white enamel prime finish. <br /> E. Subject to compliance with requirements,manufacturers offering diffusers which may be incorporated in the work <br /> ' include the following: <br /> 1. Anemostat Products Div.;Dynamics Corp.of America. <br /> ' 2. Carries Co.;Div.of Wehr Corp. <br /> 3. Krueger Mfg.Co. <br /> 4. Titus Products Div.;Philips Industries,Inc. <br /> 5. Tuttle&Bailey;Div.of Interpace Corp. <br /> ' 6. J&J Register. <br /> 7. E.H.Price. <br /> 8. Nailor. <br /> 9. Metal Air. <br /> 2.02 WALL REGISTERS AND GRILLES <br /> ' A. General: Except as otherwise indicated,provide manufacturer's standard wall registers and grilles where shown;of <br /> size,shape,capacity and type indicated;constructed of materials and components as indicated,and as required for <br /> complete installation. <br /> B. Performance: Provide wall registers and grilles that have, as minimum, temperature and velocity traverses, throw <br /> and drop,and noise criteria ratings for each size device as listed in manufacturer's current data. <br /> ' 15932-3 No.99132-CP2 <br />