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[{"$nulls":28},"S480 H or V Return Grille / 38 deg deflection, 3/8\" spacing"]
[{"$nulls":8},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W",null,null," "," "]
[null,"Enter Duct Width in inches =",{"$nulls":6},18,"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},18,"Inches",{"$nulls":11},2.25,2.06640625,0.75]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},450,"CFM"]
[null,"Enter Maximum Air Flow =",{"$nulls":6},1500,"CFM"]
[{"$nulls":26},"Pressure Constants",null,null,null," ",null,"Cosntants from old S480 / modified"]
[{"$nulls":27},"m","b",null," "," "]
[null,"S480 H or V Return Grille / 38 deg deflection",{"$nulls":24},"40 deg",0,5.02,"Ps Constant adjusted to agree with Titus!"]
[null,"IP Data",{"$nulls":5},"Metric Data",{"$nulls":24},"2004-11-29"]
[null,"Nom","Duct ","Neck","Air"," ",null,"Nom","Duct ","Neck","Air"," ",{"$nulls":19}," ","from S480-38 Sound Analysis.XLS"]
[null,"Duct","Area","Vel","Flow","Ps","Nc","Duct","Area","Vel","Flow","Ps","Octave Band, dB",{"$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)",10.134862202084092,10.465616749309415,10.46561674930939,10.46561674930932,10.465616749309234,10.465616749309277]
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[null,null,null,281.28544423440457,581.25,-0.01982967199710401,16.798344567658972,null,null,1.4289300567107752,274.31942625,-4.937588327278899,30.658382358457576,30.051039616711268,31.059462640605528,20.612284509227198," - "," - ",{"$nulls":8},"40 Deg",null,-123.57991792797034,56.03015699212757,10,null,"B",-116.75140362512685,-98.63922694392306,-95.61225478871557,-150.67940141529078,-210.39415763694933,-227.1517565477972]
[null,null,null,344.8015122873346,712.5,-0.029796094031028293,21.75263766210719,null,null,1.75159168241966,336.2625225,-7.419227413726045,35.86500075035457,34.5780605274906,35.51360759246401,26.67735036494823,17.15744343787752,11.047171347259795,{"$nulls":9},"corrrection",80,-25]
[null,18,null,408.31758034026467,843.75,-0.0417846886515459,25.866871418261752,457.2,null,2.0742533081285446,398.20561875000004,-10.404387474234928,40.18877504771348,38.33747118222504,39.212499274160635,31.714012145186945,23.646579296810717,17.844405874305526,{"$nulls":10},-43.57991792797034,31.03015699212757]
[null,"x",2.25,471.8336483931947,975,-0.055795455858656834,29.385051472952995,"x",0.20903184000000002,2.3969149338374294,460.14871500000004,-13.893068508805552,43.88613824959745,41.55223348470604,42.37551034992693,36.02098254786621,29.19559515351283,23.656884298590004,{"$nulls":8},"Data based on a wag !!!!!  "]
[null,18,null,535.3497164461247,1106.25,-0.07182839565236109,32.458230952213654,457.2,null,2.7195765595463137,522.09181125,-17.88527051743791,47.11583671379398,44.36037331413623,45.13844475908472,39.783181427269014,34.042738106918385,28.734165489283274]
[null,null,null,598.8657844990548,1237.5,-0.08988350803265874,35.186447092563924,null,null,3.0422381852551985,584.0349075,-22.380993500132025,49.98300263688725,46.85330041413595,47.5912407316802,43.123074777222016,38.345790931951505,33.241523613670815]
[null,null,null,662.3818525519848,1368.75,-0.10996079299954965,37.63938710964868,null,null,3.3648998109640833,645.97800375,-27.380237456887862,52.560872448724865,49.09469197869111,49.796550386563766,46.12597397194749,42.21466712326309,37.294090765928196,{"$nulls":21}," "]
[null,null,null,725.8979206049149,1500,-0.13206025055303397,39.867545471384005,null,null,3.687561436672968,707.9211,-32.88300238770546,54.90251233258044,51.13068769065392,51.79977065021471,48.853694545452484,45.72900859763589,40.975290193514674]
[{"$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," "]