926SB: Installation, Start-up, Operating, Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
21
Table 9 – Air Filter Selection and Duct Sizing - In. (mm)
A11437
Fig. 27 – Optional Media Cabinet Accessory
FURNACE
CASING
WIDTH
*
*. Not all families have these models
FILTER SIZE
FILTER
TYPE
†
†. Recommended to maintain air filter face velocity. See Product Data for part
number
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
Table 10 – Air Filter Located in Filter Cabinet
FILTER
CABINET
HEIGHT - IN
(MM)
FILTER SIZE - IN (MM)
*
*. Filters with a side return-air may have a different filter size. Measure the
filter to obtain the correct size.
FILTER
TYPE
†
†. Recommended to maintain air filter face velocity. See Product Data for part
number.
16 (406)
(1) 16 x 25 x 3/4 (406 x 635 x 19) or
(1) 16 x 25 x 4-5/16 (406 x 635 x 110)
Washable or
Media
20 (508)
(1) 20 x 25 x 3/4* (508 x 635 x 19) or
(1) 20 x 25 x 4-5/16 (508 x 635 x 110)
Washable or
Media*
24 (610)
(1) 24 x 25 x 3/4* (610 x 635 x 19) or
(1) 24 x 25 x 4-5/16 (610 x 635 x 110)
Washable or
Media*
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