Broan QTR140 Typical Installations, Plan The Installation, Housing mounted to I-joists, Page 

TYPICAL INSTALLATIONS

Housing mounted to I-joists.

Use I-joist spacer block (provided).

Housing mounted to joists.

MODEL QTR140

Page 

PLAN THE INSTALLATION

	ROOF CAP *
6-in. or 4-in.
ROUND
DUCT *
	6-in. or 4-in.	WALL
* Purchase		CAP *
	ROUND
separately	ELBOW *

The unit will operate most quietly and efficiently when located where the shortest possible duct run and minimum number of elbows will be needed.

Use a roof cap or wall cap that has a built-in damper to reduce backdrafts.

Plan to supply the unit with proper line voltage and appropriate power cable.

Housing mounted to truss.