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Answer Posted / sathya
To measure the ducting, need to know the depth, width and
length of the duct... says w=2500,d=500,l=500 (w*d)*2*l
so (2.5*.5)*2*.5=1.25sqmtr
the gauge of the duct varies as per the size of the duct
upto 750 - 24g, 750-1500-22g, 1500-2250-20, above 2250-18g
GSS sheet
regards
sathya
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