3. CHECKING THE OPENING-Check the wood framing for firmness, especially the center pad that holds the spring's main bracket. This short piece of wood (15" min.) holds the entire force of the spring as it balances the door 's weight and tries to twist out from the wall at the bottom, and into the wall at the top. Being short, it tends to split readily so at this time we recommend you to lag (4-3" lag screws), nail (6-16 pd. nails), or anchor (4-3" sleeve anchors) it to the wall.

Measure the garage opening. The height and width should not be appreciably different than the nominal door size. If it measures low, then the door pattern may be obscured by the framing. If high or wide, then build the opening in with appropriate material. If narrow, you run a risk of not having enough wood to fasten the track brackets to.

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4. SETTING THE STOP-Tack the stop to each side jamb and the header, flush with the inside edge of the jamb and header. This will prevent the sections from falling through the opening when you start stacking the sections.

5. BUILDING THE SECTION-On this and the following pages you will build the section from the bottom to the top. This will enable you to stack the finished sections in the opening in the correct order, from the bottom to the top.

Lay the sections face down on a pair of sawhorses (or clean floor) with the upper edges away from you, top section first (on the bottom of the stack) staggering or stepping them toward you.

The bottom section has a vinyl seal on it's lower edge, so use this to determine the top and bottom edges of the sections when stacking them.

Now that you have the sections in place, you are ready to lay out the hardware on the sections. First, remove everything from the hardware carton except the cable drums, bearing plates, track brackets, and the track flag brackets. These will be used in the installation later.

NOTE: All hardware in attached to the door sections with 3/4" sheet metal lag screws. They require a 3/16" or 5/32" pre-drilled hold as they are not self-drilling. The majority of these holes should be already drilled from the factory.

Looking down on stacked sections.

GDP International Trade CO.,LTD
Export Department
RM303, 59# Jiufeng District, Beilun,315080,Ningbo,315040 China.
T: 86 138 198 11084
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Email:gdp@gdpdoor.com
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