Marquis MQRB4436N Installation Instructions Manual page 28

Flush With Face of Fireplace Flush With Face of Fireplace
[Steel Stud Framing Shown.]
If using Optional Surround, Maximum Thickness for Non-Combustible Material is 3/4".
If Combustible (Wood) Framing
Studs are used, they must be Rotated to
allow Min.1" Clearance from Airbox.
1" Min Clearance Around All Sides of Airbox
See " " and " " pages before placing unit into the framed opening.
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