A00229
Fig. 31 - Replacement of Filter Cabinet Door to Side Blower
Cabinet
Fig. 33 - Replace Blower Access Panel
A93205
A00230
Fig. 32 - Replacement of Filter Cabinet Door to Bottom
Blower Cabinet
Fig. 34 - Removal of Furnace Door
A05099
Table 1 - Furnace Air Filter Table
FURNACE CASING WIDTH
IN (MM)
17-1/2 (445)
21 (533)
24-1/2 (610)
FILTER QUANTITY AND SIZE *
SIDE RETURN*
IN (MM)
(1) 16 x 25 x 3/4
(406 x 635 x 19)
(1) 16 x 25 x 3/4
(406 x 635 x 19)
(1) 16 x 25 x 3/4
(406 x 635 x 19)
BOTTOM RETURN*
IN (MM)
(1) 16 x 25 x 3/4
(406 x 635 x 19)
(1) 20 x 25 x 3/4
(508 x 635 x 19)
(1) 24 x 25 x 3/4
(610 x 635 x 19)
FILTER TYPE*
6/4" (19 mm) thick washable
6/4" (19 mm) thick washable
3/4" (19 mm) thick washable
Table 2 - Air Filter Located in Filter Cabinet
FILTER CABINET HEIGHT - IN (MM) FILTER SIZE - IN (MM) FILTER TYPE
(1) 16 x 25 x 3/4"
(406 x 665 x 19) or washable
16 (406) (1) 16 x 25 x 4-5/16
(406 x 635 x 11 O)
(1) 20 x 25 x 3/4"
(508 x 665 x 19) or washable
20 (508) (1) 20 x 25 x 4-5/16
(508 x 635 x 11 O)
(1) 24 x 25 x 3/4"or
(610 x 665 x 19) or washable
24 (610) (1) 24 x 25 x 4-5/16
(610 x 635 x 11 O)
Filters with a side return-air may have a different filter size. Measure the filter to obtain the correct size.
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