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[{"$nulls":28},"EGC / EG 15 1/2 x 1in deep Egg Crate Return "]
[{"$nulls":8},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W",null,null," "," "]
[null,"Enter Duct Width in inches =",{"$nulls":6},20,"Inches",{"$nulls":11},"Area ( ft2 )","( ft2 )","border",null,null," Free area & Core Area Ratio",null,"Ak/Ac",1,null,null," - ",null," "]
[null,"Enter Duct Height in inches =",{"$nulls":6},20,"Inches",{"$nulls":11},2.7777777777777777,2.5733506944444446,0.75,{"$nulls":8},"\"",null,"Based on Titus lab data egc50x50 sound"]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},1000,"CFM",{"$nulls":22}," ",null,"Modified 6/6/06 to agree with latest Titus data"]
[null,"Enter Maximum Air Flow =",{"$nulls":6},2000,"CFM"]
[{"$nulls":26},"Pressure Constants",null,null,null," "]
[{"$nulls":27},"m","b"," ",null," ",null,"Titus new catalog:  @ 1400 fpm   Ps= 0.294   Pv=.122 ",{"$nulls":4},"Pt= ",0.416]
[null,"EGC15 Return Grille / 1/2\"x1/2\"x1\" Core",{"$nulls":24},"0 Degrees",0,3.4098360655737703,{"$nulls":9},"Pt/Pv",3.4098360655737703]
[null,"IP Data",{"$nulls":5},"Metric Data",{"$nulls":24}," "]
[null,"Nom","Duct ","Neck","Air"," ",null,"Nom","Duct ","Neck","Air"," ",{"$nulls":19}," ","From EGC sound regression.Modified as shown"]
[null,"Duct","Area","Vel","Flow","Ps","Nc","Duct","Area","Vel","Flow","Ps","Octave Band, dB",{"$nulls":20},"2","3","4","5","6","7","NC"]
[null,"in","ft²","FPM","CFM","\"WG",null,"mm","m²","m/s","L/s","Pa",2,3,4,5,6,7,{"$nulls":8},"Sound",{"$nulls":5},"M(An)",9,9,9,9,9,9,9]
[null,null,null,388.5984145724405,1000,-0.022687388485282765," - ",null,null,1.9740799460279979,471.9474,-5.649159732835408,27.23369217173829,16.234039197082986,19.346205761134037,18.11298479471936,14.612199994547417," - ",{"$nulls":10},"B","CVn","CAn",null,"M(Vn)",48.32559400262715,63.49076575168263,56.83291432745321,61.769299007535025,76.75923951561742,111.41937020452976,76.42144057971625]
[null,null,null,437.1732163939956,1125,-0.02871372605168599," - ",null,null,2.2208399392814977,530.940825,-7.149717786869812,29.70566820374072,19.481752017397362,22.25335268701921,21.272640248761327,18.53862871691397," - ",{"$nulls":8},"0 deg",null,-197.8352554430108,76.42144057971625,9,null,"New B",-101.59997378344744,-151.86985453757805,-131.51717489014055,-145.53316904249021,-187.85042014412969,-293.2226308937761,-197.8352554430108," "," "]
[null,null,null,485.74801821555064,1250,-0.03544904450825432,11.15863680578159,null,null,2.4675999325349975,589.93425,-8.826812082555326,31.91692611515493,22.386930131969997,24.853884227893282,24.099048365038108,22.050938894494415," - ",{"$nulls":10}," ",null,null," "]
[null,20,null,534.3228200371057,1375,-0.04289334385498772,14.321925435035816,508,null,2.714359925788497,648.927675,-10.680442619891942,33.9172522127899,25.014983409184033,27.206351157273936,26.655845511301273,25.228209928749187,14.40203269716688,{"$nulls":14},"Old B",-97.59997378344744,-147.86985453757805,-127.51717489014054,-141.53316904249021,-183.85042014412969,-289.2226308937761,-193.8352554430108]
[null,"x",2.7777777777777777,582.8976218586607,1500,-0.051046624091886206,17.20978169563805,"x",0.258064,2.961119919041997,707.9211,-12.710609398879665,35.7434068642746,27.41420807670611,29.35398520085895,28.990018427943063,28.128831125009107,18.612410352399316,{"$nulls":8}," "]
[null,20,null,631.4724236802158,1625,-0.059908885218949784,19.86635193355219,508,null,3.2078799122954966,766.914525,-14.917312419518495,37.42330629803346,29.62128082224482,31.329617007730555,31.137249363600013,30.797143965427274,22.48558233878368,{"$nulls":14},"Correction",-4,-4,-4,-4,-4,-4,-4]
[null,null,null,680.0472255017709,1750,-0.06948012723617847,22.32595180139672,null,null,3.454639905548996,825.90795,-17.30055168180844,38.97865023974288,31.66471101497053,33.158766360433624,33.125274694230946,33.26761578506697,26.07157949025737]
[null,null,null,728.6220273233259,1875,-0.07976035014357222,24.615784496312763,null,null,3.701399898802496,884.901375,-19.860327185749483,40.426640807691236,33.56709901159312,34.861663667618195,34.97608199826178,35.567570024956105,29.410062968269763,{"$nulls":14},"Corrected 6/6/06 to attempt to agree with newest Titus data",{"$nulls":6}," "]
[null,null,null,777.196829144881,2000,-0.09074955394113106,26.75777993145406,null,null,3.9481598920559957,943.8948,-22.596638931341634,41.78114552480847,35.34666413601486,36.45461771469869,36.7073966071248,37.719033533104245,32.53300569944572]
[{"$nulls":26}," ","Band","Const","Slope 1","Slope 2",null,"Note: Titus catalog assume area constant of 6!!!   (Which cannot be!) "]
[null,"1) Performance data does not include damper",{"$nulls":25},2,-101.59997378344744,48.32559400262715,9,null,"So I used a 9 for an area constant",{"$nulls":6}," "]
[null,"2) Data were obtained from test conducted in accordance with ANSI / ASHRAE Standard 70-1991.",{"$nulls":25},3,-151.86985453757805,63.49076575168263,9]
[null,"3) All pressures are in inches of water (Pascals)",{"$nulls":25},4,-131.51717489014055,56.83291432745321,9,null,"Note this data assumes no OBD"]
[null,"4) N.C. values are based on Octave Band 2 - 7 sound power levels minus a room absorption of 10dB.",{"$nulls":25},5,-145.53316904249021,61.769299007535025,9]
[{"$nulls":27},6,-187.85042014412969,76.75923951561742,9]
[{"$nulls":27},7,-293.2226308937761,111.41937020452976,9]