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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},19,"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},19,"Inches",{"$nulls":11},2.5069444444444446,2.3129340277777777,0.75,{"$nulls":10},"reduced slightly because no deflectors are present!"]
[null,"Enter Air Flow (must be greater than 0) =",{"$nulls":6},1100,"CFM",{"$nulls":24},".15 reduction on Ps"]
[null,"Series =",5810,{"$nulls":4},"Tag =","RG-3",{"$nulls":25},"3 NC less"]
[{"$nulls":26},"Pressure Constants"]
[null,"5810 Return Grille",{"$nulls":25},"m","b"]
[null,"Tag : RG-3",{"$nulls":24},"5 or 15 Deg",0,6.01375]
[null,"IP Data",{"$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",{"$nulls":5},"M(An)",10,10,10,10,10,10]
[null,"19 x 19",2.5069444444444446,475.5864139613436,1100,-0.07069952785196973,19.903048586722864,"483 x 483",0.23290276000000004,2.4159789829236256,519.14214,-17.604182435140462,35.44864555898481,37.603104438321765,35.82093995566967,29.847693231691547,22.20613482671885,12.615052585392785,{"$nulls":10},"B","CVn","CAn"," ","M(Vn)",48,50,58,70,85,89]
[{"$nulls":26},"5 or 15 Deg",null,-169.4,69.23,10.87,null,"B",-96.7,-99.9,-123.1,-161.2,-209,-229.3]
[{"$nulls":32},"KEC",-97.7,-100.9,-124.1,-162.2,-210,-230.3]
[{"$nulls":31}," ",1,"Constants adjusted to yield Titus 1700 NC levels"]
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