Horizontal Adapter Installation — 542J150,180
NOTE: CRRFCURB013A00 is a fully factory preassembled
horizontal adapter and includes an insulated transition duct.
The pressure drop through the adapter curb is negligible.
Power exhaust and barometric relief accessory are not avail-
able with horizontal adapter.
For horizontal return applications: The power exhaust and
barometric relief dampers must be installed in the return air
duct.