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64
Notes
1. PD represents clean pressure drop in inches w.g. Recommended final pressure drop for all models is 1.5 inch w.g.
2. Operation down to zero air flow is satisfactory for all models.
3.Actual filter face size of 24” x 24” and 24” x 12” is 5/8” undercut on height and width. All other sizes are 1/2” under-
cut on height and width. Actual filter depth is 3-3/4”
4. Efficiency is average and is based on ASHRAE Standard 52.1 test methods.
5. Performance tolerances conform to Section 7.4 of ARI Standard 850.
6. PrecisionCell II 24” x 12” filters are available with notches on the 24” horizontal sides. Contact factory.
7. Performance values stated may be averages typical of the products listed. Contact factory for actual performance
test reports on specific products.
1.0 General
1.1 Medium and high efficiency extended surface fil-
ters shall be PrecisionCell II minipleat panel fil-
ters as manufactured by Flanders.
1.2 Filter sizes, efficiencies and capacities shall be
as scheduled on the drawings.
1.3 Filters shall be UL 900 Class 2 listed.
2.0 Filter Construction
2.1 The filter pack shall be constructed of water-laid
microfine fiberglass media containing a water-
repellent binder formed into closely-spaced
pleats held in position by adhesive bead separa-
tors.
2.2 The filter pack shall be strengthened on the a i r
entering and air exit sides with horizontal and
diagonal support members.
2.3 The enclosing frame shall be double-wall water-
resistant beverage board sealed between the
walls and to the filter pack with adhesive.
3.0 Performance
3.1 Initial and final resistances shall not exceed the
scheduled values.
3.2 Media area must equal or exceed that of the
specified filter
3.3 The average efficiency shall be as determined by
ASHRAE Standard 52.1 test methods.
3.4 The manufacturer shall guarantee performance
as stated in the literature within tolerances as
outlined in Section 7.4 of ARI Standard 850.
Nominal Size
H x W x D (inch)
Note 3
Media
Area
(sq. ft.)
Weight
Each
(lbs.)
24 x 24 x 4
24 x 12 x 4
24 x 24 x 4
24 x 12 x 4
24 x 24 x 4
24 x 12 x 4
120
60
120
60
120
60
6.5
3.5
6.5
3.5
6.5
3.5
Capacities and Dimensions
125 fpm 250 fpm 375 fpm 500 fpm 625 fpm
cfm
PD cfm
PD
cfm PD cfm PD cfm PD
500
250
500
250
500
250
.11
.11
.08
.08
.06
.06
1000
500
1000
500
1000
500
26
.26
.21
.21
.13
.13
1500
750
1500
750
1500
750
.42
.42
.36
.36
.25
.25
2000
1000
2000
1000
2000
1000
.68
.68
.58
.58
.40
.40
2500
1250
2500
1250
2500
1250
.95
.95
.80
.80
.58
.58
Other Standard Size PrecisionCell II Filters
Nominal Size
H x W x D (inch)
Note 3
Nominal
Capacity (cfm)
60-65% 80-85% 90-95%
Media Area
(sq. ft.)
Weight Each
(lbs.)
20 x 20 x 4
20 x 16 x 4
24 x 20 x 4
24 x 18 x 4
25 x 20 x 4
25 x 16 x 4
1400
1100
1850
1500
1750
1400
.40
.40
.40
.58
.58
.58
.68
.68
.68
84
66
105
93
105
84
4.0
3.5
5.5
5.0
6.0
4.0
Guide Specifications
90-95%
80-85%
60-65%
Pressure Drop
Flanders - Foremost in Air Filtration
Corporate Headquarters, St. Petersburg, FL
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