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Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
C
A
B
Figure 3.8 Passive Heat Minimum Framing Dimensions Open Top Discharge
OPEN TOP DISCHARGE MINIMUM FRAMING DIMENSIONS
A*
B
C
Height of Discharge
Opening
Clearance to
Discharge Opening
Width of Discharge
Opening
B41L-AU
Inches
2
48
36-1/2
millimeters
51
1219
927
*
Mesh screen required for front discharge or open top discharge passive heat installations with discharge
opening of 3 in. (76 mm) or greater.
Framing Dimensions - Passive Heat Open Top Discharge (PH-FRT-LINEAR)
WARNING! Risk of Fire!
Mesh screen required on bottom of discharge opening when discharge
opening is greater than 3 in. (76 mm). Secure mesh to top of framing.
Open Top Discharge: Both sides and the top are open allowing air to be conveyed into the room.
WARNING! Risk of Fire!
Optional fan may not be
used with passive heat installation.