24
Table 7 – Air Filter Selection and Duct Sizing -- In. (mm)
FURNACE CASING WIDTH
FILTER SIZE
FILTER TYPE
SIDE
RETURN
BOTTOM
RETURN
14---3/16
{
(360)
16 x 25 x 3/4
(406 x 635 x 19)
14 x 25 x 3/4
(356 x 635 x 19)
Washable*
17---1/2 (445)
16 x 25 x 3/4
(406 x 635 x 19)
16 x 25 x 3/4
(406 x 635 x 19)
Washable*
21 (533)
16 x 25 x 3/4
(406 x 635 x 19)
20 x 25 x 3/4
(508 x 635 x 19)
Washable*
24---1/2 (622)
16 x 25 x 3/4
(406 x 635 x 19)
24 x 25 x 3/4
(610 x 635 x 19)
Washable*
* Recommended to maintain air filter face velocity. See Product Data for part number.
{
Not all families have these models.
TABS
FILTER
FRAME
FILTER
(FIELD SUPPLIED)
DOOR
FURNACE
OPENING
TABS
(TYP.)
3
4”
/
OPENING
14
1
2”
/
16
1
8”
/
2
3
8”
/
1
2”
/
3
8”
/
1
1
4”
/
1
1
4”
/
25
1
8”
/
17
1
8”
/
23
1
8”
/
(32 mm)
(10 mm)
(13 mm)
(60 mm)
(19 mm)
(410 mm)
(368 mm)
(587 mm)
(435 mm)
(32 mm)
(638 mm)
A11091
Fig. 18 -- Accessory Side Filter Rack
A11095
Fig. 19 -- Accessory Bottom Filter
PG92SAS
