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Mounting
Heights
Allowable mounting heights for exit devices are
the same in each model code: not less than 34" nor
more than 48" above the floor. Existing
installations shall be not less than 30” nor
more than 48” above the floor. While design may
dictate where the push bar is located, consideration
should be given in assigning a mounting height to
either the lower or upper limits. The lower height
is suggested for grade schools, while the upper
height may be better suited for adult use, i.e.
colleges. Consider where the trim is located on
the opposite side of the door, as some manufacturers
may have as much as 8"-10" differences between the
centerline of the push bar and the centerline of
pull trim. This height difference varies, depending
on locking functions and type of exit device. Also
consider applicable regulations for the physically
disabled, as height requirements may vary. ADA (Americans
with Disabilities Act) regulations permit 48" maximum
height for accessible door hardware, while some
state codes have a 42" limit. Some states also require
the ends of lever trim to return to within 1/2"
of the door face.
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