Filter
Top Products
16
Table 5 – Air Delivery -- CFM (With Filter)*
FURNACE
SIZE
RETURN---AIR
INLET
SPEED
EXTERNAL STATIC PRESSURE (IN. WC)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
045---08 /
024045
Bottom or
Side(s)
High
Me d --- H igh
Me d --- L ow
Low
1120
930
820
725
1075
890
785
690
1020
850
750
655
960
805
700
605
895
750
650
555
815
680
585
495
720
600
505
405
605
500
400
305
455
345
235
--- ---
340
195
--- ---
--- ---
045---12/
036045
Bottom or
Side(s)
High
Me d --- H igh
Medium
Me d --- L ow
Low
1465
1295
1150
1030
860
1400
1260
1120
1010
835
1325
1210
1085
980
810
1250
1155
1040
945
780
1175
1090
985
895
745
1085
1015
920
835
700
980
930
835
765
635
860
830
740
685
555
725
700
620
570
445
560
545
510
345
260
070---081 /
024070
Bottom or
Side(s)
High
Me d --- H igh
Me d --- L ow
Low
1140
915
795
690
1105
885
770
665
1055
855
740
630
1010
825
700
590
955
785
655
550
885
725
600
475
815
655
510
415
715
530
420
340
545
420
325
245
390
280
--- ---
--- ---
070---12/
036070
Bottom or
Side(s)
High
Me d --- H igh
Medium
Me d --- L ow
Low
1440
1180
1015
885
695
1400
1165
1020
885
700
1355
1150
1010
880
700
1300
1125
990
865
690
1240
1085
965
845
670
1170
1030
925
815
640
1090
970
875
770
600
1000
890
800
700
540
890
785
700
605
460
745
645
560
475
345
070---16/
048070
Bottom or
Side(s)
High
Me d --- H igh
Medium
Me d --- L ow
Low
1840
1610
1460
1260
1065
1790
1575
1430
1240
1040
1730
1535
1400
1215
1015
1670
1485
1360
1180
985
1605
1435
1315
1145
955
1530
1370
1260
110
915
1450
1305
1205
1040
875
1370
1230
1130
985
825
1275
1145
1055
915
765
1170
1055
965
835
695
090---14/
042090
Bottom or
Side(s)
High
Me d --- H igh
Me d --- L ow
Low
1650
1515
1385
1205
1600
1485
1360
1180
1535
1440
1320
1160
1465
1380
1260
1120
1385
1300
1195
1065
1285
1220
1120
1005
1175
1115
1025
925
1055
990
915
810
895
830
710
630
645
600
565
510
090---16/
048090
Bottom or
Side(s)
High
Me d --- H igh
Me d --- L ow
Low
2060
1710
1470
1260
1030
2000
1695
1475
1365
1025
1930
1665
1450
1245
1020
1835
1585
1390
1225
990
1755
1480
1335
1165
940
1620
1390
1230
1090
890
1490
1245
1120
995
810
1315
1110
1005
880
720
1115
955
855
750
615
910
775
690
600
500
090---20/
060090
Bottom Only
High
Me d --- H igh
Medium
Me d --- L ow
Low
2380
2185
1905
1595
1340
2295
2115
1865
1565
1310
2205
2045
1815
1530
1280
2105
1960
1740
1485
1225
2005
1875
1670
1430
1170
1900
1770
1590
1355
1120
1775
1655
1490
1275
1040
1650
1535
1390
1160
955
1510
1400
1245
1055
850
1335
1240
1110
920
750
Both Side or 1
Side & Bottom
High
Me d --- H igh
Medium
Me d --- L ow
Low
2485
2175
1845
1540
1280
2415
2130
1815
1515
1250
2330
2070
1770
1475
1220
2230
2000
1720
1435
1190
2135
1930
1655
1385
115
2030
1840
1580
1335
1105
1920
1740
1500
1270
1035
1790
1620
1395
1175
945
1645
1495
1270
1045
845
1485
1345
1090
915
745
1Side Only
High
Me d --- H igh
Medium
Me d --- L ow
Low
2420
2160
1850
1530
1290
2345
2110
1815
1490
1250
2265
2045
1765
1455
1220
2165
1960
1710
1420
1190
2070
1885
1635
1375
115
1960
1790
1560
1320
1110
1850
1695
1480
1250
1040
1720
1570
1380
1160
950
1570
1445
1250
1055
835
1420
1305
1110
905
740
110---12/
036110
Bottom or
Side(s)
High
Me d --- H igh
Me d --- L ow
Low
1625
1510
1360
1195
1575
1470
1335
1180
1515
1415
1295
1155
1445
1355
1250
1115
1355
1285
1180
1065
1260
1185
1100
980
1165
1070
985
860
990
890
810
740
785
725
670
605
595
530
475
410
110---16/
048110
Bottom or
Side(s)
High
Me d --- H igh
Medium
Me d --- L ow
Low
2055
1750
1545
1300
1050
1990
1725
1525
1290
1045
1910
1670
1490
1275
1015
1815
1605
1445
1235
975
1695
1515
1355
1165
935
1575
1400
1260
1085
880
1425
1255
1135
1005
815
1230
1120
1020
895
715
1090
975
880
750
610
910
785
750
620
515
110---22/
066110
Bottom Only
High
Me d --- H igh
Medium
Me d --- L ow
Low
2530
2225
1895
1565
1320
2460
2190
1885
1555
1295
2380
2135
1865
1535
1265
2285
2075
1820
1505
1235
2200
1995
1770
1465
1205
2085
1910
1700
1410
1160
1970
1805
1610
1350
1105
1835
1695
1520
1265
1035
1695
1565
1410
1175
950
1545
1430
1290
1050
870
Bottom Sides or
1 Side & Bottom
High
Me d --- H igh
--- ---
2205
--- ---
2175
2415
2120
2330
2065
2235
1975
2125
1900
1995
1790
1860
1685
1735
1580
1605
1460
1Side Only
High
Me d --- H igh
Medium
Me d --- L ow
Low
2485
2155
1830
1520
1275
2430
2135
1830
1505
1260
2360
2100
1810
1490
1240
2270
2040
1780
1470
1210
2175
1970
1730
1430
1180
2070
1885
1665
1385
1135
1950
1790
1595
1330
1090
1825
1680
1505
1250
1025
1685
1560
1395
1165
930
1535
1420
1275
1055
840
*A filter is required for each return---air inlet. Airflow performance included 3/4---in. (19 mm) washable filter media such as contained in factory---authorized ac-
cessory filter rack. To determine airflow performance without this filter, assume an additional 0.1 in. wc available external static pressure.
------ Indicates unstable operating conditions.
58CT