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7
Cha
p
ter 2: Prere
q
uisite
s
Enclosure
Width Model Description
Face
Velocity
(fpm)
Exhaust
Volume
(CFM)
Noise
Pressure
db(A)
Max.
Equivalent
Resistance
of 6" Duct
(Ft)
Max.
External
Static
Pressure
2' 2' Purifier Class I Enclosure
2' Purifier HEPA Filtered
Enclosure
60
75
80
90
100
105
85
110
115
130
145
155
48-53
49-55
50-56
51-57
53-58
54-59
400
220
200
140
80
70
.20"
.19"
.18"
.16"
.13"
.12"
3' 3' Purifier Class I Enclosure
3' Purifier HEPA Filtered
Enclosure
60
75
80
90
100
105
130
165
175
200
220
230
48-53
52-56
53-57
55-58
58-61
60-64
130
65
50
35
25
20
.15"
.12"
.11"
.09"
.08"
.07"
4' 4' Purifier Class I Enclosure
4' Purifier HEPA Filtered
Enclosure
60
75
80
90
100
105
175
220
235
265
295
310
49-54
54-58
58-61
60-63
62-66
64-67
100
60
50
35
25
20
.20"
.19"
.18"
.16"
.13"
.12"
Proper blower selection can be determined from these exhaust
requirements and the total system static pressure loss. For outside
exhaust, the enclosure must be connected to either a dedicated
blower or a house exhaust system.
Labconco offers accessory remote blowers listed in Chapter 7.
Contact Labconco for blower sizing assistance.
If the enclosure is connected directly to a house exhaust system, an
adjustable damper (or valve) must be installed to control the
airflow properly. This is equally important when a house exhaust
system is controlling multiple filtered enclosures. See Chapter 7
for accessory adjustable damper ordering information.
Electrical Requirements
Standard duplex electrical receptacles should be nearby for
connecting the filtered enclosure, or other equipment. The
enclosures include iris pass-throughs to allow electrical cords
through the back of the enclosure without leaving a large hole for
contaminants to escape.
Space Requirements
The dimensions for the different models are shown in Appendix B:
Dimensions
!