Cumberland.
•
1004 E. Illinois St.
•
Assumption, IL 62510
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Phone 1-217-226-4421
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Fax 1-217-226-4420
Manual Part No. 4801-5051 Rev. 03-2020 Date: 09-22-20 CN-360777 Page
2
of 2
K
Place edge of orifice
flange even wit h inside
edge of fan opening
Shut t er
SIDE VIEW
Fan Size
Fan Model
Rough Openings
J (In.)
K (In.)
24"
Mega-Flow / Econo
Flow
30.75" square
2 x 4
2 x 8
36"
Mega-Flow / Econo
Flow
42.75" square
2 x 4
2 x 8
48"
Mega-Flow / Econo
Flow
54.75" square
2 x 4
2 x 8
52"
Mega-Flow / Panel
56.25" square
2 x 4
2 x 8
52"
Mega-Flow /
Orifice
56.25" square
2 x 4
2 x 8
36"
Mega-Flow /
Slantwall
42.75" horizontal x 43.75"vertical
2 x 4
2 x 8
48"
Mega-Flow /
Slantwall
54.75" horizontal x 55.75"vertical
2 x 4
2 x 8
52"
Mega-Flow /
Slantwall
56.75" horizontal x 57.75"vertical
2 x 4
2 x 8
Mega-Flow Fan
Rough Openings
Horizontal
Vertical
FRAMING DIAGRAM
FRAMING DIMENSIONS
