Master Lock ATS 211 - Manual (Page 9)

Lag Screws
5/16"x18x1-7/8"
Highest
Point of Travel
(of Garage Door)
Vertical
Center
Line Header
Wall
Garage
Door
Mounting Header Bracket to WALL
UP
CEILING MOUNT ONLY
Wall
Mounting Holes
Optional Wall
Mounting Holes
The nail hole is for positioning
only. You must use lag screws to
mount the header bracket.
UP
CEILING MOUNT ONLY
2"
Door
Spring
Header
Bracket
2x4
Structural
Support
Vertical
Center Line
9
You can attach the header bracket either to the
wall above the garage door, or to the ceiling.
Follow the instructions which will work best for
your particular requirements.
Fasten the Header Bracket to the Wall
• Center the bracket on the vertical guideline with
the bottom edge of the bracket on the horizontal
line as shown (with the arrow pointing toward the
ceiling).
• Mark either set of bracket holes (do not use the
holes designated for ceiling mount). Drill 3/16" pilot
holes and fasten the bracket securely to a structural
support with the hardware provided.
Fasten the Header Bracket to the Ceiling
Installation Step 2
Install the Header Bracket
Lag Screw
5/16"-18x1-7/8"
Hardware Shown Actual Size
UP
Lag Screws
5/16"x18x1-7/8"
Garage
Door
Vertical
Center Line
Header
Wall
Finished
Ceiling
Header
Bracket
6" Maximum
Vertical
Center Line
Door
Spring
UP
CEILING MOUNT ONLY
Ceiling Mounting Holes
The nail hole is for positioning only.
You must use lag screws to mount
the header bracket.
• Extend the vertical guideline onto the ceiling as
shown.
• Center the bracket on the vertical mark, no more
than 6" from the wall. Make sure the arrow is
pointing toward the wall. The bracket can be
mounted flush against the ceiling when clearance
is minimal.
• Mark holes designated for ceiling mount only. Drill
3/16" pilot holes and fasten the bracket securely to
a structural support with the hardware provided.