Carrier 438MG series Installation Instructions Manual page 14

or less.If the spacing between the ceiling and
the unit is over 0.79in
material in the part or recover the ceiling.
Establish a ceiling opening needed for
After creating an opening in the ceiling, it may be
necessary to reinforce the ceiling beams to keep
the
the weight of the unit. Adjust the clearance from the
For installations other than the standard
/ 20 mm , attach sealing
The center
attached screws as shown in the figure below.
14