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51
Notes:
1. PD represents clean pressure drop in inches w.g. Recommended final pressure drop for all models is 1.5 inches w.g.
2. Operation down to zero airflow is satisfactory for all models.
3. Consult factory before operating at these velocities.
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. Actual filter header face size is 5/8” under on height and width. Actual depth is 5-7/8” or 11-1/2”
7. Performance values stated may be averages typical of the products listed. Contact factory for actual performance test
reports on specific products.
Rigid-Air Filters with Header
Nominal
Depth
(inch)
Efficiency
12
6
90-95%
80-85%
60-65%
50-55%
90-95%
80-85%
60-65%
50-55%
Nominal Size
H x W x D (inch)
24 x 24 x 12
24 x 12 x 12
24 x 24 x 12
24 x 12 x 12
24 x 24 x 12
24 x 12 x 12
24 x 24 x 12
24 x 12 x 12
24 x 24 x 6
24 x 12 x 6
24 x 24 x 6
24 x 12 x 6
24 x 24 x 6
24 x 12 x 6
24 x 24 x 6
24 x 12 x 6
250 cfm 375 cfm 500 cfm 625 fpm
cfm PD cfm PD cfm PD
cfm PD
1000
500
1000
500
1000
500
1000
500
1000
500
1000
500
1000
500
1000
500
.36
.25
.15
.11
.50
.42
.27
.11
1500
750
1500
750
1500
750
1500
750
1500
750
1500
750
1500
750
1500
750
.60
.44
.27
.22
.81
.68
.45
.24
2000
1000
2000
1000
2000
1000
2000
1000
2000
1000
2000
1000
2000
1000
2000
1000
.87
.65
.41
.35
1.14
.96
.64
.39
50
22
50
22
50
22
50
22
25
11
25
11
25
11
25
11
20
12
20
12
20
12
20
12
11
6
11
6
11
6
11
6
Media
Area
(sq. ft.)
Weight
Each
(lbs.)
2500
1250
2500
1250
2500
1250
2500
1250
1.16
.85
.56
.48
Note 3
Note 3
Note 3
2500
1250
.56
Rigid-Air Filter with Header and Plastic Pleat Separators
Flanders - Foremost in Air Filtration
Corporate Headquarters, St. Petersburg, FL
the filter and hvac store