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Framing and Positioning
Before You Begin
Make sure that you have enough rough opening and there is enough space so that the fan flanges do not
overlap.
1. Construct the frame opening to 61-1/4 in. H x 58 in. W.
NOTE:
Remember that the framing must be able to support the weight of the fan assembly. Ensure
the load bearing portion of the bottom sill is rigid and properly supported.
2. Plan the layout and spacing of fans with cones; spacing fans too close together will cause
interference with the cones.
Figure 3-1
54 in. Framed rough opening
NOTE:
3/4 in. has been added for fan clearance.
16
PNEG-1502
54" Galvanized Mega Flow Butterfly Fan