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[{"$nulls":28},"S80Z/S580Z Return Grille / 0 Deg deflection"]
[{"$nulls":8},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W",null,null," "," "]
[null,"Enter Duct Width in inches =",{"$nulls":6},20,"Inches",{"$nulls":11},"Area ( ft2 )","( ft2 )","border",null,null," Free area & Core Area Ratio",null,"Ak/Ac",1,null,null," - ",null,"Based on Titus 350 RLZ test data"]
[null,"Enter Duct Height in inches =",{"$nulls":6},20,"Inches",{"$nulls":11},2.7777777777777777,2.5733506944444446,0.75]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},1000,"CFM"]
[null,"Enter Maximum Air Flow =",{"$nulls":6},3500,"CFM"]
[{"$nulls":26},"Pressure Constants",null,null,null," "]
[{"$nulls":27},"m","b",null," "," "]
[null,"S80Z/S580Z Return Grille / 0 Deg deflection",{"$nulls":24},"0 Degrees",0,1.5715583151141086]
[null,"IP Data",{"$nulls":5},"Metric Data"]
[null,"Nom","Duct ","Neck","Air"," ",null,"Nom","Duct ","Neck","Air"," ",{"$nulls":19}," ","from S80Z Sound regression.xls"]
[null,"Duct","Area","Vel","Flow","Ps","Nc","Duct","Area","Vel","Flow","Ps","Octave Band, dB",{"$nulls":20},"2","3","4","5","6","7"]
[null,"in","ft²","FPM","CFM","\"WG",null,"mm","m²","m/s","L/s","Pa",2,3,4,5,6,7,{"$nulls":8},"Sound",{"$nulls":5},"M(An)",14.36021043418606,23.196044930344378,22.01266627473711,20.15512365155787,24.151822219046334,31.229159247287757]
[null,null,null,388.5984145724405,1000,-0.0053809326377975124,10.961391624373956,null,null,1.9740799460279979,471.9474,-1.3398522268115807,38.824736247804175,32.88953980166451,29.317871561650882,24.20007611775837,13.496325888197603," - ",{"$nulls":10},"B","CVn","CAn",null,"M(Vn)",31.97449593135393,53.98486974255536,54.72419088216035,60.697466657554315,83.58617579102742,92.3793642012851]
[null,null,null,510.0354191263282,1312.5,-0.00926949723933087,18.86768251062909,null,null,2.5909799291617475,619.4309625000001,-2.3081048125933865,42.6009022213377,39.26511578088045,35.780760858858876,31.368405174892544,23.367795748348257,15.61458705446091,{"$nulls":8},"0 deg",null,-169.9409491329986,66.94612142222914,18.380778523438032,null,"B",-49.86810539385367,-116.42628838085231,-121.4266537433719,-141.249733582771,-212.86446022850734,-247.3313484208025]
[null,null,null,631.4724236802158,1625,-0.014209025246684048,25.077206621030424,null,null,3.2078799122954966,766.914525,-3.538047286424328,45.56666631917751,44.27243126296847,40.85665137328899,36.998341228592224,31.120752347537987,24.183147519577744]
[null,20,null,752.9094282341035,1937.5,-0.020199516659857066,30.191110098448515,508,null,3.8247798954292462,914.3980875000001,-5.029679648304409,48.009145173191406,48.396246164256354,45.03694179349318,41.634920304665016,37.50576205326654,31.239854342831563]
[null,"x",2.7777777777777777,874.3464327879911,2250,-0.0272409714788499,34.53864524464365,"x",0.258064,4.441679878562995,1061.88165,-6.783001898233625,50.085594740249924,51.902067167511575,48.59077490813697,45.57666276819633,42.933915757580664,37.239044798021894,{"$nulls":8}," ",{"$nulls":4},"From Titus","b","MVN","MAN"]
[null,20,null,995.7834373418789,2562.5,-0.03533338970366257,38.3198529583284,508,null,5.058579861696745,1209.3652125,-8.798014036211981,51.89155762634882,54.9512058114874,51.68167141256199,49.00493798789351,47.654976305137595,42.45675655013554,{"$nulls":13},"Band","Const","Slope 1","Slope 2","NC"]
[null,null,null,1117.2204418957665,2875,-0.04447677133429506,41.66541675407507,null,null,5.675479844830494,1356.8487750000002,-11.074716062239471,53.48945028543971,57.64904434031996,54.41645675751396,52.03823166688515,51.832109761274225,47.07332058372111,{"$nulls":13},2,-49.86810539385367,31.97449593135393,14.36021043418606,18.380778523438032]
[null,null,null,1238.6574464496541,3187.5,-0.05467111637074737,44.66542940458763,null,null,6.292379827964243,1504.3323375,-13.613107976316094,54.922302409655124,60.068232916495816,56.86877604723207,54.75822744794415,55.577802259268324,51.21305646927368,{"$nulls":13},3,-116.42628838085231,53.98486974255536,23.196044930344378,66.94612142222914," ",null,null," "]
[null,null,null,1360.0944510035417,3500,-0.06591642481301951,47.38463698340226,null,null,6.909279811097992,1651.8159,-16.413189778441858,56.22103771826175,62.26098230700097,59.09155507355904,57.22362809915002,58.972893085540264,54.96530771140169,{"$nulls":13},4,-121.4266537433719,54.72419088216035,22.01266627473711,-169.9409491329986]
[{"$nulls":26}," "," ",null,null,null,5,-141.249733582771,60.697466657554315,20.15512365155787]
[null,"1) Performance data does not include damper",{"$nulls":29},6,-212.86446022850734,83.58617579102742,24.151822219046334,{"$nulls":4}," "]
[null,"2) Data were obtained from test conducted in accordance with ANSI / ASHRAE Standard 70-1991.",{"$nulls":29},7,247.3313484208025,92.3793642012851,31.229159247287757]
[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."]