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Framing Dimensions - Passive Heat Open Top Discharge (PH-MR)
Open Top Discharge: Both sides and the top are open allowing air to be conveyed into the room.
WARNING! Risk of Fire! Mesh screen required on bottom of discharge opening when discharge
opening is greater than 3 inches. Secure mesh to top of framing.
MER36MN
MER42MN
*
Mesh screen required for front discharge or open top discharge passive heat installations with discharge
opening of 3 inches or greater.
Figure 3.13 Passive Heat Minimum Framing Dimensions Open Top Discharge
OPEN TOP DISCHARGE MINIMUM FRAMING DIMENSIONS
Discharge Opening
Inches
millimeters
Inches
millimeters
Majestic • MER36MN, MER42MN Installation Manual • 2599-980 Rev. B • 5/23
C
A*
Height of
Clearance to
Discharge Opening
2
51
1041
2
51
1041
A
B
B
C
Width of
Discharge Opening
41
36-1/2
927
41
42-1/2
1080
23
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