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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},14,"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},24,"Inches",{"$nulls":11},2.3333333333333335,2.267795138888889,0.25,{"$nulls":8},"\"",null,"Based on Titus lab data egc50x50 sound"]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},800,"CFM",{"$nulls":22}," ",null,"Modified 6/6/06 to agree with latest Titus data"]
[null,"Enter Maximum Air Flow =",{"$nulls":6},1600,"CFM"]
[{"$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,"EG15 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,352.76555023923447,800,-0.018696262318825548," - ",null,null,1.7920489952153111,377.55792,-4.655369317387561,24.709242828658894,13.072427324820104,16.464322567358046,15.023700102310194,10.893115088564379," - ",{"$nulls":10},"B","CVn","CAn",null,"M(Vn)",48.32559400262715,63.49076575168263,56.83291432745321,61.769299007535025,76.75923951561742,111.41937020452976,76.42144057971625]
[null,null,null,396.8612440191388,900,-0.02366245699726359," - ",null,null,2.016055119617225,424.75266,-5.8919517923186335,27.181218860661325,16.32014014513448,19.371469493243218,18.18335555635216,14.81954381093093," - ",{"$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,440.9569377990431,1000,-0.029212909873164924," - ",null,null,2.240061244019139,471.9474,-7.274014558418066,29.39247677207556,19.225318259707144,21.97200103411732,21.00976367262897,18.331853988511405," - ",{"$nulls":10}," ",null,null," "]
[null,14,null,485.0526315789474,1100,-0.03534762094652955,10.617033103190131,355.59999999999997,null,2.464067368421053,519.14214,-8.801557615685859,31.3928028697105,21.853371536921152,24.324467963497945,23.566560818892107,21.50912502276615," - ",{"$nulls":14},"Old B",-97.59997378344744,-147.86985453757805,-127.51717489014054,-141.53316904249021,-183.85042014412969,-289.2226308937761,-193.8352554430108]
[null,"x",2.3333333333333335,529.1483253588517,1200,-0.04206659021735749,13.504889363792394,"x",0.21677376000000004,2.688073492822967,566.3368800000001,-10.474580964122014,33.2189575211952,24.25259620444323,26.47210200708296,25.900733735533898,24.40974621902607,13.437084996455532,{"$nulls":8}," "]
[null,24,null,573.244019138756,1300,-0.049369817685648715,16.161459601706532,609.5999999999999,null,2.912079617224881,613.53162,-12.29308460372653,34.898856954954034,26.459668949981968,28.447733813954564,28.047964671190847,27.078059059444264,17.31025698283984,{"$nulls":14},"Correction",-4,-4,-4,-4,-4,-4,-4]
[null,null,null,617.3397129186603,1400,-0.057257303351403256,18.621059469551064,null,null,3.1360857416267947,660.72636,-14.25706853449941,36.45420089666349,28.503099142707676,30.276883166657633,30.03599000182178,29.548530879083962,20.896254134313587]
[null,null,null,661.4354066985646,1500,-0.06572904721462108,20.91089216446708,null,null,3.3600918660287085,707.9211,-16.366532756440648,37.90219146461184,30.40548713933024,31.979780473842204,31.886797305852618,31.848485118973066,24.234737612325922,{"$nulls":14},"Corrected 6/6/06 to attempt to agree with newest Titus data",{"$nulls":6}," "]
[null,null,null,705.5311004784689,1600,-0.07478504927530219,23.052887599608404,null,null,3.5840979904306223,755.11584,-18.621477269550244,39.25669618172905,32.18505226375198,33.5727345209227,33.618111914715634,33.999948627121206,27.357680343501933]
[{"$nulls":26}," ","Band","Const","Slope 1","Slope 2",null,"Note: Titus catalog assume area constant of 6!!!   (Which cannot be!) "]
[null,"1) Performance data does not include damper",{"$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]