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[{"$nulls":28},"5810 Reversable Core Narrow Blade Return Grille "]
[{"$nulls":8},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W",null,null," "," "]
[null,"Enter Duct Width in inches =",{"$nulls":6},24,"Inches",{"$nulls":11},"Area ( ft2 )","( ft2 )","border",null,null," Free area & Core Area Ratio",null,"Ak/Ac",1,null,null," - ",null,"Based onTitus 1700 constants"]
[null,"Enter Duct Height in inches =",{"$nulls":6},8,"Inches",{"$nulls":11},1.3333333333333333,1.1705729166666667,0.75,{"$nulls":10},"reduced slightly because no deflectors are present!"]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},475,"CFM",{"$nulls":24},".15 reduction on Ps"]
[null,"Enter Maximum Air Flow =",{"$nulls":6},1000,"CFM",{"$nulls":24},"3 NC less"]
[{"$nulls":26},"Pressure Constants"]
[{"$nulls":27},"m","b"]
[null,"5810 Reversable Core Narrow Blade Return Grille ",{"$nulls":24},"5 or 15 Deg",0,6.01375]
[null,"IP Data",{"$nulls":5},"Metric Data"]
[null,"Nom","Duct ","Neck","Air"," ",null,"Nom","Duct ","Neck","Air"," "]
[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",{"$nulls":5},"M(An)",10,10,10,10,10,10]
[null,null,null,405.7842046718576,475,-0.051469258314206255,11.915763785817326,null,null,2.0613837597330367,224.175015,-12.815845320237358,29.18215133732835,31.198741613174647,28.86510271655986,22.06464437163767,13.389071440484898," - ",{"$nulls":10},"B","CVn","CAn"," ","M(Vn)",48,50,58,70,85,89]
[null,null,null,461.8464961067853,540.625,-0.06667345187352315,15.806663912007231,null,null,2.3461802002224696,255.146563125,-16.601689516507264,31.879872066161454,34.0088673723758,32.124848597233196,25.99882043451926,18.16628523112685," - ",{"$nulls":8},"5 or 15 Deg",null,-169.4,69.23,10.87,null,"B",-96.7,-99.9,-123.1,-161.2,-209,-229.3]
[null,null,null,517.908787541713,606.25,-0.08384249506204405,19.251245955470274,null,null,2.630976640711902,286.11811125,-20.87678127044897,34.268142152630105,36.49664871244731,35.010674951716155,29.48171431061941,22.39551350924843,12.952526628882836,{"$nulls":14},"KEC",-97.7,-100.9,-124.1,-162.2,-210,-230.3]
[null,24,null,573.9710789766407,671.875,-0.10297638787976907,22.341446772358076,609.5999999999999,null,2.9157730812013347,317.089659375,-25.6411205820625,36.41070519192834,38.72848521171629,37.599605290868155,32.60628540959597,26.18963555800569,16.925195597581606,{"$nulls":13}," ",1,"Constants adjusted to yield Titus 1700 NC levels"]
[null,"x",1.3333333333333333,630.0333704115684,737.5,-0.12407513032669806,25.14343015802121,"x",0.12387072,3.2005695216907677,348.0612075,-30.894707451347816,38.35343525854438,40.75216236444136,39.94707078802925,35.439433423411046,29.629886717638314,20.527340929432214]
[null,8,null,686.0956618464961,803.125,-0.14713872240283107,27.706402320626246,203.2,null,3.4853659621802007,379.032755625,-36.63754187830494,40.13044903588141,42.60321838250074,42.09429576897814,38.0309118486942,32.77668194833926,23.822220641577943]
[null,null,null,742.1579532814237,868.75,-0.1721671641081681,30.067953413809143,null,null,3.7701624026696328,410.00430375,-42.86962386293386,41.76780932004692,44.30880201183983,44.07277277901146,40.41872892976893,35.67617411821571,26.858159501801524]
[null,null,null,798.2202447163514,934.375,-0.19916045544270916,32.25744856010099,null,null,4.054958843159065,440.975851875,-49.59095340523458,43.285876155551875,45.89012163215749,45.90710353857996,42.63257639821366,38.36441747275573,29.67290842596698,{"$nulls":21}," "]
[null,null,null,854.2825361512791,1000,-0.22811859640645438,34.29826519148779,null,null,4.339755283648499,471.9474,-56.80153050520714,44.700858075334736,47.36406113193131,47.61687335831759,44.69609169789699,40.87011462237122,32.29652073556436]
[{"$nulls":26}," "," "]
[null,"1) Performance data does not include damper",{"$nulls":37}," "]
[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."]
[{"$nulls":27}," ",null,null," "]