Can this unit be mounted horizontally?A. The NuTone ILFK120 is intended for vertical installation.
Can I duct two or more ILFK120's through the same outside vent using the damper?A.
Per NutTone the ILFK120 can be vented from one port but the exit vent will need to be increased to at least 8" ducting.
Is this fan a variable speed?A.
The NuTone ILFK120 is a single speed fan.
Can the ILFK be mounted "upside down" so that the discharge is in the down position?A.
Yes, the NuTone ILFK120 can be mounted upside down.