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[{"$nulls":28},"AFS585 (H,V)  Aluminum Return"]
[{"$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 Models 4F Return Aluminum"]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},450,"CFM",{"$nulls":22}," "]
[null,"Enter Maximum Air Flow =",{"$nulls":6},1475,"CFM"]
[{"$nulls":26},"Pressure Constants",null,null,null," "]
[{"$nulls":27},"m","b",null," "," "]
[null,"AFS585 Return Grille / 45° deflection",{"$nulls":24}," ",0,5.001873004430887]
[null,"IP Data",{"$nulls":5},"Metric Data",{"$nulls":24}," "]
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[null,"Duct","Area","Vel","Flow","Ps","Nc","Duct","Area","Vel","Flow","Ps","Octave Band, dB",{"$nulls":20},"2","3","4","5","6","7","NC"]
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[null,20,null,324.23680215888004,834.375,-0.026229069064633008,26.536715275324003,508,null,1.6471229549671107,393.781111875,-6.531038197093619,40.829090854868944,44.78389472199766,44.08847529156491,26.70898647145357,20.530227495233632,18.199061488439057,{"$nulls":9}," ",{"$nulls":5},-49.289634470495336,-62.56114509490833,-76.5303399776648,-194.2779246060708,-220.57886303912957,-193.6950447258766,-120.34521776632485]
[null,"x",2.7777777777777777,374.025974025974,962.5,-0.03490292201808619,30.03405532365527,"x",0.258064,1.900051948051948,454.2493725,-8.690827582503461,42.940087101795605,47.31840706687725,46.9510011284034,32.02648455464755,26.34016553467073,23.30238473134851,{"$nulls":8}," ","Band","Const","Slope 1","Slope 2"]
[null,20,null,423.81514589306795,1090.625,-0.04481374182751008,33.093674691414314,508,null,2.1529809411367853,514.717633125,-11.15862171505001,44.7868749214259,49.53570448464422,49.455258469716405,36.67845430838217,31.42294236085418,27.76698537588426,{"$nulls":9},2,-48.289634470495336,34.02667290200247,8.97063112627595]
[null,null,null,473.6043177601619,1218.75,-0.0559615284929047,35.813054092452255,null,null,2.4059099342216226,575.18589375,-13.93442059473327,46.42829372263737,51.506430970228756,51.68103396997173,40.81310937556562,35.940497304729476,31.735107409150046,{"$nulls":9},3,-61.56114509490833,40.853233467781244,9.179549741171828]
[null,null,null,523.3934896272558,1346.875,-0.06834628201427001,38.26034904453643,null,null,2.6588389273064594,635.6541543750001,-17.018224221553233,47.905482210910726,53.27997863270969,53.684112004676415,44.534076178015184,40.006053367149136,35.30620345318083,{"$nulls":9},4,-75.5303399776648,46.140409044042066,9.17566565112711,{"$nulls":5}," ",null,null," "]
[null,null,null,573.1826614943498,1475,-0.08196800239160604,40.48508772227168,null,null,2.911767920391297,696.122415,-20.410032595509904,49.24833561783995,54.8922403987743,55.50503071924913,47.91665936723332,43.70188897162468,38.552545086132156,{"$nulls":9},5,-193.2779246060708,85.71155358390013,11.637061612013042]
[{"$nulls":26}," ",6,-219.57886303912957,93.64908229308406,12.105120774308723]
[null,"1) Performance data does not include damper",{"$nulls":25},7,-192.6950447258766,82.25931758641285,10.6024290162107,{"$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."]