Thermo Pride OH6FA072D48B Installation And Operation Manual page 19

Connect the return air plenum to the filter rack and slide the filter into place. Dimensions for adapting the
return air plenum to the filter rack are provided (See Fig. 10a & 10b).
: Failure to comply with minimum filter installation requirements may affect the
performance and/or void the warranty on this unit.
If a method other than Thermo Pride filter racks is selected for retention of the filter and/or use of a
different filter type is desired, refer to Table 4 below for minimum sizing guidelines for selecting filter for
the unit.
Fig. 10a: A typical filter rack and dimensions for the OH6 furnace.
Fig. 10b: A typical filter rack and dimensions for the OH8 furnace.
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