On the third slot from the top.
Garage door top bracket installation.
Separate all four parts by snapping apart figure 3.
Warnings safety information 2 safety information potential hazard effect prevention.
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For use on 21 in.
High garage door top sections only easily installed with common household tools.
The main vertical braces will be two 2 by 4 boards secured together to create a t shape.
Door refer to page 8 for proper location and page 5 step 21 for strut installation instructions.
One board will be the height from the concrete floor to the top of the garage door and the other will run from the top of the floor brace to the l shaped mounting bracket.
While you re working on the sections protect them from scratches by putting carpet scraps on top of your sawhorses.
Using the pre punched slots in the top rail fin as a guide mark and drill 1 4 holes through the aluminum angle.
Then install the opener bracket that replaces the center bracket between the top two sections.
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If necessary use a piece of wood as a shim under the low side to make the section level figure 5b.
Install the stiffening strut on top of the top section of steel doors with the section lying flat.
It seems like this is a very common problem as thi.
Safety bottom bracket installation locate the safety bottom bracket assembly figure 2.
Place the bottom section face down on a sturdy pair of padded saw horses figure 4.
When the lift bracket snaps on your garage door it usually damages the area where it once was attached to.
This steel bracket provides the proper reinforcement to the top sections and are adjustable for compatibility with most garage door openers.
7 f the aluminum angle should also be bolted to the top rail fin at the ends of the section using 1 4 x 3 4 bolts and 1 4 flange nuts.
Assemble the flag bracket to the transition curve using track bolt s and nut s from the inside of the track and through a slot on the flag bracket.
Cut the boards to length and secure them together with screws.
Place the bottom section with hardware installed in the opening against the perimeter seal and centered from side to side figure 5.