User guide
Product Service 1-800-522-7658 
55
Original instructions 
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Model  31142_ 31241_ 31162_ 31261_ 
Type  A1 A2 A1 A2 
Cabinet Size (in feet)  4  4  6  6 
Sash Opening (inches)  12 10 12 10 
Starting Serial #
1
 1303_  1303_  1303_  1303_ 
Nominal Avg. Downflow (FPM)  55+/-5  55+/-5  55+/-5  55+/-5 
Nominal Average Inflow (FPM)  85+/-5  105+/-5  85+/-5  105+/-5 
Supply HEPA Data         
Labconco P/N  3838401 3838401 3838403 3838403 
Exhaust HEPA Data         
Labconco P/N  3838501 3838501 3838503 3838503 
Motor/Blower Data         
Labconco P/N
2
 3832201  3832201  3832208  3832208 
Motor HP  1/2  1/2  3/4 3/4 
Fluorescent/UV Lamp Data         
Fluorescent Lamps (2 each)  F32T8 
TL741 
F32T8 
TL741 
F40T8 
SP41
F40T8 
SP41
UV Lamp  G30T8  G30T8  G30T8  G30T8 
1.  The primary serial tag is on the lower outside edge of the right corner post. 
The secondary serial tag is located on the front of the electronics module on 
the top right side of the cabinet. The first two digits of the serial number are 
the year of production; the next two are the month. The next 5 digits are the 
sequence of production, and the letter following the serial number is the 
revision level of the cabinet. 
2.  Each motor must be programmed by Labconco for the appropriate width 
cabinet. 










