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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},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 4F Return Aluminum"]
[null,"Enter Minimum Neck Velocity (greater than 0)=",{"$nulls":6},175,"FPM",{"$nulls":22}," "]
[null,"Enter Maximum Neck Velocity =",{"$nulls":6},550,"FPM"]
[{"$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",{"$nulls":20},"2","3","4","5","6","7","NC"]
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[null,null,null,268.75,842.7598741319445,-0.01802001746702952,22.848743733340704,null,null,1.36525,397.7383314208985,-4.48698434929035,38.825632374374095,42.241914113548226,41.11518325408309,20.72142530474055,13.935833801934088,12.404075484454715,{"$nulls":15},"AFS580 Sound Regression:"]
[null,22,null,315.625,989.7528754340278,-0.02485427233385183,26.7848599154162,558.8,null,1.603375,467.11129620361334,-6.188713811129105,41.20147412067307,45.09440626943988,44.33684146068647,26.706056471332985,20.474686420739552,18.14766144440801,{"$nulls":9}," ",{"$nulls":5},-49.289634470495336,-62.56114509490833,-76.5303399776648,-194.2779246060708,-220.57886303912957,-193.6950447258766,-120.34521776632485]
[null,"x",3.361111111111111,362.5,1136.745876736111,-0.03278493172476328,30.1749314933138,"x",0.31225744000000005,1.8415000000000001,536.4842609863281,-8.163447999466056,43.24772306382894,47.55118146014704,47.111569495809604,31.860459208339407,26.10642526930807,23.094458392810644,{"$nulls":8}," ","Band","Const","Slope 1","Slope 2"]
[null,22,null,409.375,1283.7388780381946,-0.04181199563976388,33.152167370932,558.8,null,2.079625,605.857225769043,-10.411186914301206,45.0447841665565,49.70877579789015,49.5483970574049,36.38716975225837,31.05234294923293,27.438844939129602,{"$nulls":9},2,-48.289634470495336,34.02667290200247,8.97063112627595]
[null,null,null,456.25,1430.7318793402778,-0.05193546407885361,35.80628845267446,null,null,2.31775,675.2301905517579,-12.93193055563455,46.64681301277082,51.63220976585422,51.72075950017353,40.42260341604076,35.461487848209806,31.311741946217943,{"$nulls":9},3,-61.56114509490833,40.853233467781244,9.179549741171828]
[null,null,null,503.125,1577.7248806423613,-0.06315533704203248,38.200613070122294,null,null,2.5558750000000003,744.6031553344728,-15.725678923466088,48.09202857988966,53.36736997810356,53.68048202772502,44.06303196684691,39.43904721659556,34.80554360760396,{"$nulls":9},4,-75.5303399776648,46.140409044042066,9.17566565112711,{"$nulls":5}," ",null,null," "]
[null,null,null,550,1724.7178819444446,-0.0754716145293005,40.38149725012317,null,null,2.794,813.9761201171876,-18.792432017795825,49.40841138949385,54.94785051490529,55.46550642516203,47.37893699368472,43.06202976387156,37.9878926992236,{"$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."]