FIRE RATED TOP ROD ONLY (TRO) DOORS
3/4" Dia. Min.
1-1/4" Deep min.
Retaining Clip
Popper
Cap Plug
12"
12"
9/16" Dia. Min.
1-5/8" Deep min.
A door locking popper is required when a fire door utilizes a top latching mechanism only
(TRO). The popper is designed to project a spring loaded bolt into the adjacent frame or door
in the event of fire. Detex recommends installing the popper in the edge of the door 12" above
the threshold or finished floor.
Holes for the popper and plug must be aligned with each other.
NOTE:
Door/Frame reinforcement is required where
popper and cap plug are to be installed.
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STEP 14:
COVER INSTALLATIONS
STEP 15:
DOOR POPPER INSTALLATION
Install endcap with two screws
to match finish
Install cover with four screws to
match finish