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[{"$nulls":28},"AFS580Z, 585Z (H,V)  Aluminum Return, Zero Deflection"]
[{"$nulls":8},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W",null,null," "," "]
[null,"Enter Duct Width in inches =",{"$nulls":6},22,"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},22,"Inches",{"$nulls":11},3.361111111111111,3.1358506944444446,0.75,{"$nulls":8},"\"",null,"Based on:","Titus Models 55F,56F Return Aluminum"]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},1100,"CFM",{"$nulls":22}," "]
[null,"Enter Maximum Air Flow =",{"$nulls":6},2500,"CFM"]
[{"$nulls":26},"Pressure Constants",null,null,null," "]
[{"$nulls":27},"m","b",null," "," "]
[null,"AFS580 / AFS585 Return Grille / 0° deflection",{"$nulls":24}," ",0,2.3160868549331712]
[null,"IP Data",{"$nulls":5},"Metric Data",{"$nulls":24}," "]
[null,"Nom","Duct ","Neck","Air"," ",null,"Nom","Duct ","Neck","Air"," ",{"$nulls":19}," ","from : ","Titus 13R Data"]
[null,"Duct","Area","Vel","Flow","Ps","Nc","Duct","Area","Vel","Flow","Ps","Octave Band, dB",{"$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)",10,10,10,10,10,10,10]
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[null,null,null,406.5882352941176,1275,-0.013564042027899256,15.449650135869573,null,null,2.0654682352941176,601.732935,-3.3774464649469147,48.777186114439,33.79828433322082,14.778511723343426," - ",16.133250535621087," - ",{"$nulls":8}," ",null,-157.59232410851325,64.4187228585656,10,null,"B",9.359526545133612,-102.93799227463047,-252.137182426257,-243.15846638914078,-90.4665653275585,-200.96264452751151,-157.59232410851325]
[null,null,null,462.39446366782005,1450,-0.017543036286756283,19.047939398631826,null,null,2.348963875432526,684.3237300000001,-4.368216035402314,49.514793230302146,36.61932687024991,20.386486687760026,11.255673247320884,18.30911980884231," - "]
[null,22,null,518.2006920415224,1625,-0.02203309402840228,22.23572328843258,558.8,null,2.632459515570934,766.914525,-5.486240413072168,50.16825155709212,39.118535048160666,25.35468433406308,15.88760357811145,20.236758336202513,11.791534167972143,{"$nulls":9}," "]
[null,"x",3.361111111111111,574.0069204152248,1800,-0.027034215252837262,25.09714754407824,"x",0.31225744000000005,2.915955155709342,849.50532,-6.731519597956479,50.7548099848177,41.36187874628972,29.81424675843496,20.045325135520187,21.96704866609383,15.19175065516981,{"$nulls":8}," ","Band","Const","Slope 1","Slope 2"]
[null,22,null,629.8131487889273,1975,-0.03254639996006123,27.69287388300947,558.8,null,3.1994507958477505,932.096115,-8.104053590055246,51.28690345441255,43.39691647724483,33.8597159412067,23.816980923792272,23.536672665203852,18.276239603802026,{"$nulls":9},2,9.359526545133612,13.205083000697508,10]
[null,null,null,685.6193771626297,2150,-0.03856964815007416,30.06807980124836,null,null,3.482946435986159,1014.68691,-9.603842389368467,51.773792822942184,45.25906719394719,37.561501526557976,27.26821498321638,24.972948961429637,21.09868521205138,{"$nulls":9},3,-102.93799227463047,50.503987893846116,10]
[null,null,null,741.4256055363321,2325,-0.04510395982287607,32.25731771497257,null,null,3.766442076124567,1097.277705,-11.230885995896141,52.22256093066256,46.975419834688424,40.97345385022757,30.44923284529287,26.296771244851826,23.70014594754221,{"$nulls":9},4,-252.137182426257,100.39731623832925,10,{"$nulls":5}," ",null,null," "]
[null,null,null,797.2318339100345,2500,-0.052149334978466945,34.28760591739578,null,null,4.049937716262976,1179.8685,-12.985184409638268,52.6387462109451,48.56715661937021,44.13768123115787,33.39929277097937,27.524477355406418,26.11272751632623,{"$nulls":9},5,-243.15846638914078,93.60202780183769,10]
[{"$nulls":26}," ",6,-90.4665653275585,38.953710903304824,10]
[null,"1) Performance data does not include damper",{"$nulls":25},7,-200.96264452751151,76.54845418876445,10,{"$nulls":8}," "]
[null,"2) Data were obtained from test conducted in accordance with ANSI / ASHRAE Standard 70-1991."]
[null,"3) All pressures are in inches of water (Pascals)"]
[null,"4) N.C. values are based on Octave Band 2 - 7 sound power levels minus a room absorption of 10dB."]