Standard Frame
C
L
Hinge or Pivot
4
(102)
4
(102)
4
(102)
1-1/4
(32)
5/16
(8)
A
Flush Partition
C
L
Hinge or
Pivot
1-5/8
(41)
5/16
(8)
4
(102)
4
(102)
4
(102)
A
Narrow Frame
C
L
Hinge or
Pivot
1-1/4*
(32)
5/16
(8)
4
(102)
4
(102)
4
(102)
*NOTE: This dimension must be
taken from the same surface that
the Soffit Plate is fastened to.
A
3148 Drop Plate Mounting Holes
Friction Hold-Open Feature
Hold door open to opening angle desired and tighten holder-
adjustment-nut (wrench supplied) or use 1” Box or Open End
wrench.
The Thumbturn Hold-Open feature is controlled by the knob
located on the arm of the unit. Turning this knob clockwise
will engage the Hold-Open mechanism and increase the
Hold-Open force. Turning this knob counterclockwise will
reduce the Hold-Open force and disengage the Hold-Open
mechanism.
Thumbturn Hold-Open Feature
Thumbturn Action
(Units suffixed “T”)
DECREASE - - INCREASE
Page 5
3148 Drop Plate
3148 Drop Plate
3148 Drop Plate
293L Bracket
890 Bracket