M943B
M944B
Fig. 5. Counterflow furnace, with Electronic Air
Fig. 6. Central fan installation, with Electronic
Cleaner mounted horizontally in return duct or
Air Cleaner mounted horizontally in central
plenum just above furnace.
return duct.
M945B
M946B
Fig. 7. Horizontal furnace, with electronic air
Fig. 8. Two or more Electronic Air Cleaners
filter mounted vertically in return duct near
used in a high capacity system.
furnace.
F300 Electronic Air Cleaner 68-0240EFS—01
8