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Garage door back jamb.
In some designs a piece of finish lumber or trim attaches across the underside of the header.
And vibration caused by door operation.
Header and back jambs once you determine the right size of the garage door turn your attention to the header and back jambs.
Start by getting the header flush on the same level with the back jambs.
Wood horizontal and vertical back jamb detail guidelines the primary structural requirements for a garage door are adequate support for.
The weight of the door track and spring assemblies torque generated by the counterbalance system wind load forces.
A garage door jamb runs from the floor to the underside of the header at each side of the opening.
Item 154387 model x491668armwl.
The next step is to ensure that the back jambs are perpendicular plumb and square.
The home mender dustin luby shows us how to replace a rotted garage door jamb and weatherstripping.
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Armour 4 5625 in x 6 86 ft pine primed finger joint door jamb.