28
Table 7 – Filter Media Pressure Drop (Clean) Versus Face Velocity-- In. W.C. (Pa)
Face Velocity
Factory-Accessory
Washable
Representative After-Market Filter Media*
Fiberglass*
Pleated*
FPM
(m/s)
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
200
(1)
0.04
(10)
0.05
(13)
0.08
(20)
0.18
(47)
0.12
(31)
300
(1.5)
0.05
(14)
0.09
(22)
0.13
(34)
0.30
(75)
0.21
(52)
400
(2)
0.07
(17)
0.13
(32)
0.20
(50)
-
-
0.31
(78)
500
(2.5)
0.08
(21)
0.18
(44)
0.27
(69)
-
-
-
-
600
(3)
0.09
(23)
0.23
-
-
-
-
-
-
-
700
(3.6)
0.10
(26)
0.29
-
-
-
-
-
-
-
* Recommended to maintain air filter face velocity. See Product Data for part number.
{
Not all families have these models.
14-3/16 and 17-1/2-in.
Furnace
16-in. Media Cabinet
21-in. Furnace
4-Ton or less, AC
capacity airflow
20-in. Media Cabinet
4-in.
Block Off
Plate
1/2-in.
Screws
20- or 24-in. Media
Cabinet
Bottom Return Plenum
21- or 24-1/2-in.
Furnace
Up to 5-Ton AC
capacity airflow
45
°
Transition
20- or 24-in. Media Cabinet
Screw
14-3/16-in. Furnace
Filler plates
Screw
14--3/16-in. Furnace with Filler Plates, Centered
14-3/16-in. Furnace
Filler plate
Screws
14--3/16-in. Furnace with Filler Plates, Off--Set to Right
Media Cabinet Installation Option for
4-Ton or Less A/C Capacity
20- or -24-in. Media Cabinet Installation
with Angled Transition
20- or -24-in. Media Cabinet Installation
for Combination Side and Bottom Return
Media Cabinet Installation
Side Return
21-in. Furnace
up to 5-Ton AC
Capacity
24-1/2-in. Furnace
up to 4-Ton AC
Capacity
A11437
Fig. 29 -- Media Filter