Figure 3 Box Dimensions, Semi-Flush Mounting And Trim Ring; Figure 4 Flush Trim Detail - Mircom FR-320 Series Installation And Operation Manual

PLACE FA-300-TRB TRIM RING OVER BACKBOX
17"
Adhere trim ring to
22.5" wall surface around
the FR-320-R/W
backbox
Figure 3 Box dimensions, semi-flush mounting and trim ring
Remove the door (also disconnect the ground strap), the dead front and semi-flush mount the
backbox into the wall. Peel the adhesive cover from the FA-300-TRB trim ring and stick it to
the wall surface around the backbox, after the wall is finished.
Figure 4 shows a cross-section of the semi-flush mounted backbox and the trim ring. Make
sure to allow a minimum depth of 1" above the wall surface for proper door opening.
TRIM RING
WALL
WOOD OR
METAL STUD
Figure 4 Flush Trim Detail
1" is the minimum depth 3.5" is the maximum
above the wall required depth for semi-flush
mounting using the
for semi-flush mounting
flush trim ring
using the flush trim ring
MIN 1"
BACKBOX
Mounting Holes for
Surface Mounting
Mounting Holes for
Surface Mounting
15