LVR – Louvre
BHP – Brake Horsepower
CFM – Cubic Feet/Minute
L/S – Litres/Second
S – Seconds
MIN – Minutes
HR – Hour
KW – Kilowatts
SP – Static Pressure
TP – Total Pressure
VEL – Velocity
VP – Velocity Pressure
HP – Horsepower
oz - Ounces
LB – Pound
FT – Feet
g – Grams
Kg – Kilogram
Km – Kilometre
m – Metre
cm – Centimetre
mm – Millimetre
Pa – Pascal
F – Force
N - Newton
RPM – Revolutions/Minute
Hg – Mercury
WG – Water Gauge
IN – Inches
LOUVRES – Quick Selection
Generally, free area assumed is 50%.
Maximum intake through 4" deep LVR = 600 FPM
Therefore:
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